Over the Christmas break I put a Zone 4" lift on my TJ and a Zone 2" puck lift w/shocks on my Wifes JK. They were both complete kits and the instructions were easy to follow. Dave at Zone was very helpfull on with questions I had - even some that didn't have to do with the lift kit. For the money, I'm pretty impressed. The JK rides better than stock and the TJ is bouncy but it is a short arm lift.
2000 TJ sport
2008 Dodge dually
1972 Kaiser Jeep deuce and a half
2008 JK unlimited (wifes)
2001 Boxster (wifes)
1995 Ford F350 dually flatbed (wifes)