Hi Mandyltolbert 12,
Welcome to the Mattress Forum! :).
You didn’t mention the specific mattresses you are considering (both Naturepedic and Mygreenmattress make a range of mattresses) and I didn’t see any specific questions in your post so I can’t really make any specific comments but I can certainly provide you with some general information that may be helpful with “how” to choose between them.
The first thing I would consider is how important an organic certification is to you since many people that are looking for an organic mattress are really more interested in a “safe” mattress and organic certifications and safety certifications are very different from each other. There is more about the different levels of organic certifications in post #2 here and some of the benefits of an organic certification in post #3 here and there is more about the different types of organic and safety certifications in post #2 here.
There is also a lot more information in post #2 here and the more detailed posts and information it links to about safe, natural, organic, “chemical free”, and “green” mattresses and mattress materials that can help you sort through some of the marketing information and terminology that you will encounter in the industry and can help you differentiate between them and answer “how safe is safe enough for me” or “how natural is natural enough for me” or “how green is green enough for me” and that can help you decide on the type of materials and components you are most comfortable having in your mattress or on the certifications for harmful substances and VOC’s that may be important to you. These types of issues are complex and are generally specific to each person and their individual sensitivities, circumstances, criteria, beliefs, and lifestyle choices.
Once you have decided on the safety or organic certifications that are important to you then you will be in a much better position to ask about any of the mattresses you are considering and decide whether any of the individual materials and components in any mattress you are looking at or the mattress “as a whole” meets your “safety”, natural, or organic criteria.
My Green Mattress uses Talalay latex in their latex mattresses and there isn’t any Talalay latex that has an organic certification although there is Talalay latex that is 100% natural that doesn’t use any synthetic latex in the manufacturing process. Naturepedic uses certified organic Dunlop latex in their mattresses that contain latex. All the latex you are likely to encounter (either Dunlop or Talalay that is made with either natural or synthetic rubber or a blend of both) will have a reliable certification such as Oeko-Tex, Eco-Institut, or Greenguard Gold and based on actual testing I would consider any type or blend of latex to be a very “safe” material in terms of harmful substances and VOC’s.
There is more information about the 3 most important parts of the “value” of a mattress purchase in post #13 here which can help you make more meaningful quality/value comparisons between mattresses in terms of suitability (how well you will sleep), durability (how long you will sleep well), and the overall value of a mattress compared to your other finalists based on suitability, durability, and all the other parts of your personal value equation that are most important to you (including the price of course and the options you have available after a purchase to “fine tune” a mattress or the exchange/return options that are available to you).
Since the most important part of the “value” of a mattress purchase is how well you will sleep on it … post #2 here has more about the different ways to choose a suitable mattress (either locally or online) that is the best “match” for you in terms of “comfort” and PPP (Posture and alignment, Pressure relief, and Personal preferences) that can help you assess and minimize the risks of making a choice that doesn’t turn out as well as you hoped for.
When you can’t test a mattress in person then the most reliable source of guidance is always a more detailed phone conversation with a knowledgeable and experienced retailer or manufacturer that has your best interests at heart and who can help “talk you through” the specifics of their mattresses and the properties and “feel” of the materials they are using (fast or slow response, resilience, firmness etc) and the options they have available that may be the best “match” for you based on the information you provide them, any local testing you have done or mattresses you have slept on and liked or other mattresses you are considering that they are familiar with, and the “averages” of other customers that are similar to you. They will know more about “matching” their specific mattress designs and firmness levels to different body types, sleeping positions, and preferences (or to other mattresses that they are familiar with) than anyone else.
While I can’t speak to how any mattress will “feel” for someone else in terms of firmness, “comfort”, or PPP because this is too subjective and relative to different body types, sleeping positions, and individual preferences, sensitivities, and circumstances … outside of PPP (which is all about how well you will sleep on a mattress) the most important part of the value of a mattress purchase is it’s durability and in terms of durability a mattress is only as good as its construction and the quality and durability of the materials inside it (which is all about how long you will sleep well) regardless of the name of the manufacturer on the label.
Both of the manufacturers you are considering use high quality and durable and “safe” materials in their mattresses and there are no lower quality materials or weak links in any of their mattresses that would be a “weak link” in the mattress or would compromise the durability or useful life of the mattress.
As you probably know My Green Mattress is one of the members of this site which means that I think very highly of them and I believe that they compete well with the best in the industry in terms of their quality, value, service, knowledge, and transparency. A forum search on mygreenmattress or a term specific site search on “my green mattress” (you can just click the links) will bring up many more comments, information, and feedback about them.
Naturepedic is also a high quality option and I think highly of them as well although they are generally in a higher budget range compared to other similar mattresses. A forum search on Naturepedic (you can just click the link) will also bring up more comments, information, and feedback about them as well.
Once you have narrowed down your options to a list of finalists that are all choices between “good and good” and none of them have any lower quality materials or “weak links” in their design and if there are no clear winners between them (which is usually a good indication that you have done some very good research) then you are in the fortunate position that any of them would likely be a suitable choice and post #2 here can help you make a final choice based on your local testing or mattresses you have slept well on, your more detailed conversations with each of them, your confidence about PPP and the suitability of each one, their prices, your preferences for different types of materials, the options you have after a purchase to fine tune the mattress or exchange or return the mattress or individual layers, any additional extras that are part of each purchase, and on “informed best judgement” based on all the other objective, subjective, and intangible parts of your personal value equation that are most important to you.
The better options or possibilities I’m aware of in the Bowling Green, KY area (subject to making sure that any mattress you are considering meets the quality/value guidelines I linked earlier in this reply) are listed in post #4 here but you will need to make some phone calls to the manufacturers and retailers on the list to find out if there are any local mattresses that would meet all your criteria.
Phoenix