Hi re-vogel,
I don’t think the number of posts about them would be either good or bad … it just indicates that fewer or the members have asked about them or have considered them. You’ve probably read this but the tutorial post also includes a link to many of the better online sources of memory foam mattresses I’m aware of that would also be worth considering.
They do make a couple of claims on their site that I don’t consider to be accurate. The first is about shipping a mattress compressed and you can see my thoughts about this in post #2 here.
The second is about the benefits of component mattresses (usually with latex mattresses) vs glued layers and they indicate that component mattresses can have issues with layers shifting which isn’t normally the case (and is more about their marketing in their own self interest than reality). There is more about glued vs unglued layers in post #2 here and the post it links to.
Post #2 here has some comments about them as well.
They appear to use American made memory foam which I would consider to be good quality as long as they meet the guidelines here. I don’t know the density of the base foam they use but they should be able to tell you.
Unfortunately there is no objective way to predict or measure this and it would also vary by person (depending on how hot they tend to sleep and whether they are closer to an oven or an iceberg). Different people will have different experiences on the same mattress in terms of sleeping temperature but in general terms … memory foam would tend to be warmer than other types of foam materials. Having said that … post #2 here includes more information about all the many variables that combine together to affect sleeping temperature besides just the foam in a mattress that may be helpful. Post #6 here also has more information about different ways that can help “cool down” memory foam mattresses.
All I see on their site is a 25 year warranty but it doesn’t say which part is prorated. I personally would put much more emphasis on the quality/density of the materials than a mattress warranty which is more about marketing than anything else and has little to do with the useful life of a mattress (see post #174 here).
The two most important parts of a mattress purchase is how well a mattress matches your specific needs and preferences in terms of PPP (Posture and alignment, Pressure relief, and Personal preferences) and the durability of the materials (you can see the guidelines I would use in post #4 here).
They do use some of the Tempurpedic mattresses as a reference point for some of their mattresses like many other online memory foam manufacturers or retailers. You can also see some of the different ways that one mattress can “match” another one in post #9 here. In addition to this they have a good return policy which only charges a flat fee of $99 (which is more than some and less than others) which includes shipping both ways in case their comparison isn’t as close as you hoped for or if the mattress isn’t a good match for you in terms of PPP.
Phoenix