What do you want? Are you a serious audiophile (which begs the question - why a Jeep, because acoustically, they aren't a great choice) or do you just want a better head unit?
I'm a musician and a bit of a music snob, but I've never cared that much about sonic quality in my vehicles. (home is a different story - I just bought a 12U rack mount locking server box to keep my 1 year old away from my home theater gear). I did however recently upgrade to the 430 RBZ (non NAV) head unit on my 2012 JK. I wanted a better interface, but I didn't want to deal with a bunch of adapters and conversion crap. The RBZ was a 20 minute plug and play install, I have 2000 songs on the hard drive, I have XMSirius sat radio without needing add-ons, and my steering wheel controls work perfectly. I may, at some point, swap out the sound bar speakers, but it's not a priority for me.