Started with tuft and needle... Way to firm. It got donated and purchase refunded. I got desperate and decided to try Casper. Love IT. I'm a hot sleeper, it's not great, but a heck of allot better than any other mattress I've tired.
I'm Not an engineer, but I play one on TV. My handle is Tweety but I have nothing to do with the organization of similar name. I just had a really big head as a child so folks called me tweety bird.