Hi Taoliver,
Post #2 here has some of my thoughts about Anglbeds (and links to other local sources if you are in Houston and other online sources for those who are considering them as an online purchase).
It also has links to forum searches for Tranquility Mattress and Angelbeds so you can read any other feedback about them on the forum but I’m not sure if any of these are specific reviews of a mattress purchase (most people may have made there purchase elsewhere).
If you are looking at them as a local purchase … they would be well worth including in your research as long as you have all the information about the layers in each mattress you are considering so you can make meaningful comparisons with other mattresses that are available in the Houston area.
Phoenix