Yeah, I guess I'll echo what everyone else said in that Clayton is the man. I have a whole lot of seat time with my Clayton kit on my WJ and it has held up like no other. The only complaint I've heard is that the kit itself is almost 'overbuilt' in that it is heavier than it has to be. For example, some of his 3/8" brackets are considered overkill. I could care less since my rig already was/is a heavy mutha.
You may also hear some clowns complain about the square control arms....who cares. If you're in to the cosmetic crap then go cruise the mall
Clayton is a top notch engineer by trade and all his kits are CAD designed, laser cut, etc, etc. I know he did his reasearch on all the squat and anti-squat crap because my rig climbs like a champ
Here's a peek at his new 'Stretched TJ' kit:
http://www.pollakstj.com/stretch.html