Overall, they are pretty reliable. When they break, it can be expensive but for about $3k, you can get a factory MaxCare lifetime warranty.
The Summit has just about all options on it and also has the acoustic windshield. The air suspension may be an issue, been a lot of chatter on here.
You hear more about issues on a forum like this so read thru and make your own determination. That's what I did and I just bought a 2017 Trailhawk.
12 JK,2.5" Teraflex lift,Bilstein 5100's,BFG KO2's P305/65R17
17 WK2 Trailhawk