Hi Minaldo,
Welcome to the Mattress Forum! 
Below are some of my comments regarding Habitat and Plushbeds. They do use some good quality and durable materials in their mattresses, but some of their items can be in a bit of a higher prices range, so I always advise to make your own personal “value comparison” when comparing some of their items, but they certainly would be a “better than average” choice compared to most “mainstream” mattresses.
You can see some comments about Plushbeds in post #2 here and a forum search on Plushbeds (you can just click the link) will bring up much more information and comments/feedback about them as well. They use good quality and durable materials in their mattresses (natural or organic Dunlop and Talalay latex) and they would certainly be a “better than average” choice compared to most of the mainstream mattresses that most people end up buying. They do a lot of internet advertising so they do attract a lot of online attention for those that are looking for a latex mattress. They are also in a higher budget range than other similar mattresses and have less options available to customize their mattress so I would make some careful “value comparisons” with some of the other component latex options that are also available to you (including some of the members of this site).
You can also see some of my thoughts about Habitat latex mattresses in post #3 here and a forum search on Habitat (you can just click the link) will also bring up more information and feedback about them. Their latex mattresses use good quality materials but they are also more costly than other similar mattresses and have more limited options to “fit” their mattresses to different people, body types, and sleeping positions. They are also an “all or nothing” choice that don’t provide any options after a purchase to fine tune the mattress other than adding a topper (if it’s too firm) or returning the mattress for a refund. While they are certainly a “better than average” choice compared to many mainstream mattresses … for most of the members here that are aware of the many other online options that are available to them they probably wouldn’t be in the best “value” range.
Specific to the models you mentioned:
I believe you a referring to the 8" Botanical Bliss mattress, which uses a 6" 28 ILD 100% NR Dunlop latex base from Mountaintop foam (not organic certified) and a 2" 19 ILD 100% NR Talalay upper comfort layer from Talalay Global. This item is not customizable. There is a 365 day return policy, less a $99 return fee upon item being returned to factory. The latex is not organic certified (which someone may be confused about per your description), but is Oeko-Tex certified. These would be good quality and durable materials.
I believe you are referring to the 10" Botanical Bliss mattress, which uses a 6" Dunlop core that is 100%NR from Arpico, which is GOLS certified, on top of which is a 3" layer of 100% NR Talalay from Talalay Global. The top layer can be had in 4 different plushness levels, and they offer a 100 day layer exchange for free, with a 100 day return policy (less a $99 fee). The Dunlop is organic certified, but the Talalay is not (which someone may be confused about per your description, and there currently is no organic certified Talalay latex). This mattress would use good quality and durable materials.
While I don’t keep a record of the individual mattresses, prices or their specs that the retailers and manufacturers in the hundreds of forum lists throughout the forum carry on their floor or have available online (it would be a bigger job than anyone could keep up with in a constantly changing market), in a quick glance (and this list is by no means complete and you should do you own online searching as well) I found options for similar items in the same or lower price range at mattresses.net, SleepEZ, Dreamfoam, Sleep on Latex, Latex Mattress Factory, and Spindle. Many of these items offer good customization/exchange options, and some can be combined with toppers to achieve the desired result. You can even find lower prices by creating your own component-style product (if you desire a DIY project) and there are some good resources in the component post here.
Phoenix