Every boat manufacturer makes some kind of downriver/playboat hybrid. I've been in several of them and these are the ones I'd suggest (in order):
Jackson Fun series (either the 4Fun or Fun for you)
Wavesport EZG 60
LiquidLogic CrossRiver 250
Dagger RX 6.9
Key thing to understand about the dr/pb hybrid is they make different sizes for different types of people. So you have a lot of choices when getting one. For instance if you want more play than riverrunning then you'd let a lesser volume for your size. If you want more stability and less play you'd get your size or one up (if possible).
Every company has a different solution for outfitting. Jackson has some of the best/worst outfitting out there depending on who you talk to (I like many of their ideas). It comes down to what YOU like. Keep this in mind, outfitting has come a long way sense the RPM days. There is no reason you should be uncomfortable in your boat. There is very little reason for any part of your body to fall asleep. If you're uncomfortable something is wrong with the outfitting. You should be able to spend a full day in your boat comfortably.
Above all, get in the boats you can and see what you like and don't like. The best would be to get on a river, but a pool will work, and even sitting in the different boats in the store will give you more of an idea of what you like and don't.