I have a TJ and a friend recently moved to the JK. The v6 is a great motor. I do prefer it to my I6. On the down side, the JK is larger, and it feels like it. On the upside you can pull off 33's pretty easily from the factory.
My TJ was a dd at one point so I went with hard top/doors. I wouldn't have done it any different in that regard. the soft tops are almost deafening on the highway. If you do plan on wheeling it I'd look for the D44, I've seen busted axles in pretty stock scenarios if you get bound up.
The only issue with the hard top is it's a pita to remove by yourself. I end up pulling the doors and leaving the top most of the time.
I got bit by the bug and ended up with your typical lift/lockers/armor/etc. I've never been so terrified to go 2 mph
There's something to be said about the simplicity of the TJ. Working on it tends to be simple and lifted you'll rarely need a jack.
Unfortunately I moved away from most of the ORV parks in the area and don't use it nearly as much as I used to.