We bought a Casper Foam Mattress 2 years ago after reading thousands of glowing reviews. It was great for around 18 months then starting getting sink holes
in the spot that is used most often
. We aren't huge people (wife under 100lbs me under 200lbs) so we called Casper and they certainly weren't the friendliest ghosts. Yea, we turn (not flip) it every 4 or 5 months as instructed. It's a queen size and weighs a ton and worst part is there are no handles to lift it with. Anyway, should have bought one of those $200 ones from Amazon and Just replaced it every year or got a Sleep Number which we had many years ago when they first started out. I could have gone 5+ years with the amazon cheapies and then broke even in cost. It's VERY comfortable except for the sink holes. To get back on topic, we weren't impressed with the OMF beds only because the expensive return policies if we didn't like it.