Found an incredible mattress for the truck...

[Waterloo]

I used to be able to sleep on anything too... My favorite was the top bunk in my 780, a weaved mesh nylon base and a two inch piece of foam. I slept like a baby on that. But, as we age... No regrets yet in my current mattress purchase. I wish these guys made a full or queen size, I would put one in the house.