Good question. Disclaimer time: I am one biased mofo. I own and drive every stinking day on a Rock Krawler 3.5" lift, and Bilstein 5100's. I love it, and it handles and rides incredibly well for what it is (a lifted Wrangler on 35" mud terrains). Their kit is great, their tech support is awesome, and their warranty is solid- you break it, they replace it- no questions asked except that if there's an awesome story involved, you send pictures
Now, from what I've driven, here's the good, the bad, and the ugly:
Old Man Emu
(Not that) Bad:
Superlift (yes, it's almost the same as Black Diamond, but crappier shocks)
Rough Country- wouldn't put it on my worst enemy's JK (their other stuff is vaguely passable, but their JK stuff is all fecal matter, pure and simple, especially if you wheel)
For going down the road, the Pro Comp will be fine- their shocks are alright, and their stuff is pretty not bad. Personally, I say go for it- Mark W.