There's no way to answer your question. There are many good lift kits by many good manufacturers, and the right one for you depends on your tastes, budget, and plans for your Jeep. And even then, you'll likely have to choose between relative equals.
Start by reviewing this thread (linked by ESP123 above). I'd go from the last page toward the first, so as to see the newest lift installations.
2010 JKU "Mountain" Edition
TeraFlex 2.5" Coil Lift : Old Man Emu Nitrocharger Shocks : 33x12.5R15 Goodyear DuraTracs : 15x8 Black Rock 909s : Other Stuff . . .
for what it's worth, teraflex customer service is apparently top notch from what I've read lately. I am new to the jeep world and I plan on getting the 2.5" lift kit through them in a couple months. hope this helps, good luck. here's the kit I'm looking at unless I see something different.
so I'm new with all this. i just got my jeep like a month and a half ago and I've been dying to put a lift in it. but which one? alot of my friends have rough country? help
Stay away from Rough Country. They are cheap and it shows. What size tires are you planning on running? What kind of wheeling do you do? For entry level, to tackle most terrain, I would suggest the Rock Krawler Stock mod 2.5" lift, a budget boost or the Teraflex 2.5" coil lift.