If you tend to drive on the highway a lot. You need a jk. I'm a tj owner and when I make 3hour trips on the highway I wish I was in a jk.
however, my tj is very easy to work on. And I'm running a 2.5inch lift and 1.75inch BL and 1inch mml. I run 33s
You will love what ever you get. However, I hear that the early year jk's have a weak engine. Also, if you are looking tj's look for one with the Dana 44 rear Axel. Also be weary of lifted jeeps. Some can be simply....crap....
Rubicons are simply what what you want.
I think you will love either one. I love my tj, but I know in a few years I'll be looking at a jk.
Hope this helped!