Hi adamroberts,
You can see my comments about the Tempflow mattresses in post #9 here and a forum search on Tempflow (you can just click the link) will also bring up more comments and feedback about them as well.
They use high quality materials in all their mattresses and there are no “weak links” in any of them so if any of their mattresses are a good match for you in terms of PPP (Posture and alignment, Pressure relief, and Personal preferences) and compare well with the other mattresses you are considering based on the parts of your personal value equation that are most important to you then they would certainly be well worth considering.
Phoenix