when im rarely not in my warbonnett hammock, i use the exped synmat in bivy and they have great customer service. they just replaced my 10yo mat that had the internal baffles delaminate, creating a large bulge
therm-a-rest trail pro is a good pad. mine does not leak.
3" thick, r-4.4 and moderate price. I got mine as a 'blem' in wide regular for under $100. Midway sometimes has thermarest blems although I have not seen any lately.
I agree with many of the comments—Therm-a-Rest Neo Air x therm for backpacking (light and tough and thick, but crinkly and loud ish when sleeping on it) and Therm-a-Rest Mondo King xxl for car/boat camping. That thing is more comfortable than my bed at home!