i had my 08 wrangler x for four years. in those four years my emergency break broke ( right after the warranty expired of course), i had a leaky rear differential, there was a recall on the fuel tank because sometimes while filling up the gas would over flow and spill, and last but not least, my steering gear box went out. the steering gear box was a 700 dollar fix, too much if you ask me from a 4 year old vehicle. the steering gear box started going out relatively quickly, but the dealer refused to fix it because it technically still worked, when it finally went out around the 80k mile mark, i was in for a costly repair. the jk was loud on the highway, no room, rough, and a guzzler.
do not lift your jk if you have one! if you want an off road toy, or even a "mall crawler" get an older tj, you'll be better off.