Hi beeks1305,
You can see some comments about Yogabed along with the other “one choice fits all” style of mattresses in post #3 here. A forum search on Yogabed (you can just click the link) will also bring up all the forum posts that mention them and more comments and feedback about them as well.
You can also see some comments about some of these mattresses relative to higher weight ranges in post #3 here and the rest of the topic.
Phoenix