Hi scstanton,
I became aware of Yogabed in December but I haven’t had the chance to talk with them. Unfortunately their website (and the information they provided you) is more about marketing and doesn’t say anything about the type, quality, or durability of the materials in their mattress.
I would keep in mind that the 100 day trial period is about making sure that the mattress is a suitable choice for you in terms of PPP (Posture and alignment, Pressure relief, and Personal preferences) but trial periods aren’t long enough to tell you anything about the durability of the materials inside it or the useful life of the mattress as a whole.
If you can find out the information listed here and post it on the forum I’d be happy to make some comments about the quality and durability of the materials or help you identify whether the mattress has any obvious weak links. I would avoid any mattress where the retailer or manufacturer either can’t or won’t provide this information to their customers (see the guidelines here).
You can see some comments about the other “one choice fits everyone” types of mattresses that you mentioned in post #3 here and the rest of the topic.
Phoenix
ADDED: I used their chat to ask whether they provide the foam densities for the layers in their mattress and if they do could she tell me what they were. The customer service rep said she didn’t know so it’s not information that they seem to easily provide. She said that she would have someone email me back to let me know so if they do provide them I’ll post the information here.