Rave makes really good inflatables. They're hypalon, like good inflatable boats.
I haven't bought from here but it showed up on a search to give you an idea:
http://www.ridewatersports.com/rabo13watr7.html That's 13', my own is a 10' Bongo. They are a great lounger and a decent trampoline.
This one is six years old.