I really honestly can not live without mine, bought it about 5 years ago because my backpain and swollen legs, since then I’ve had to spend the odd night in a normal bed and I’m in so much pain and legs and feet so swollen.
I use fitted sheets, buy extra deep ones, and they’re fine. It’s so lovely to adjust it to watch tv in bed and be pain free, it’s so comfortable my husband bought one even though he’s as fit as a fiddle! You can get them as 2 singles that lock together and work independently to each other.
The only thing I will say is remember they are slightly bigger than a standard bed, and the frame is solid and heavy. In my old home the men struggled to get it up and down the stairs with a bend in, and we’ve now moved to a bungalow and they couldn’t get it into the bedroom I was going to use, just couldn’t get the turn room ( tbh it was a blessing in disguise this room is the better one in hindsight)