Hi dimethylman,
In the Natural Select line SleepEZ provides a choice between blended Talalay or 100% natural Dunlop (made in a mold) in each of their layers and they have a choice of 4 different firmness levels for each layer in the mattress. They have a zippered natural cotton cover quilted with natural wool.
Spindle mattresses are made with 100% natural Dunlop made with a continuous pour process which produces latex with a slightly different “feel” than 100% natural Dunlop made in a mold. Dunlop generally has a slightly different firmness on each side of a layer because of the nature of the Dunlop manufacturing process and the settling of latex particles but the difference can be more pronounced with different pincore patterns used by some manufacturers such as the Dunlop made by Mountaintop foam that is used by Spindle so they only offer 2 firmness choices in each layer (with a different firmness on each side of the layer). They have a zippered organic cotton cover quilted with natural wool.
As Spindle discusses on their page here … ILD is only one of several variables that can affect the softness/firmness of a latex layer and the ILD of different types and blends of latex or even the same type and blend of latex that is made by a different manufacturer or with a different process often isn’t directly comparable based on ILD ratings so if you can’t test a mattress in person then your best source of guidance about the firmness of each layer that would have the best chance of success with each manufacturer would be a more detailed conversation with each of them.
They also have different exchange/return policies.
SleepEZ has an exchange/return policy that allows you to exchange a layer for a softer of firmer version for a flat cost of $30 and they have a 90 day trial period so if you are one of the very small minority where none of the layering combinations works well for you then you can return the mattress for a refund for a flat fee of $99.
Spindle has a 365 day comfort adjustment where for a flat fee of $150 they will send you a new layer with a different firmness and you can also keep the old layer. They also have a comfort life program that allows you to purchase a new layer for a 30% discount for 25 years if your needs and preferences change or if any of the layers have become too soft over time. They don’t have a return/refund policy.
ADMIN NOTE:Retired Website | Archived Footprint: Spindle Mattress
The durability of any of the latex that each of them offers would be closely comparable.
There is also more about the 3 most important parts of the “value” of a mattress purchase in post #13 here (this is the same post As I linked in my previous reply) 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 if your choice doesn’t turn out as well as you hoped for).
Spindle and SleepEZ are both members of this site which means that I think highly of both of them and that I believe they both compete well with the best in the industry in terms of their quality, value, service, knowledge, and transparency so either one of them would certainly make a great choice.
Phoenix