My dad has a '11 4 Door. 3.5" Rough Country lift, 35" Trail Grapplers, 18" MotoMetal wheels, SkyJacker dual steering stabilizers, all black...it's his tow-behind for the motorhome so odds are it will very rarely see offload duty. Which is unfortunate.
When he first bought it it had some cheap arse $150 2.5" spacer lift that rode like absolute shite. I started doing a bit more research for a proper
lift in the 2.5-4" range. After countless hours of research, doing some homework, etc I let him know that the 2.5" from either TeraFlex or Rock Krawler was about as good as it came....so he bought the Rough Country.
It's a decent lift, rides better than before, definitely flexes better as well but I don't think it'll live up to the potential of other similar sized lifts.
I wouldn't mind having my own 4 door JK though.