If you are going to do some heavy duty off roading, I recommend the IRO 4" long arm lift. That's what I have and I love it. The ride quality is great both on or off road. But the IRO lift is kind of pricey and it totally replaces your stock suspension system. If you are not going to do a lot of real off roading, probably any of the other brand lifts but I've heard some negative comments about the on road ride quality of some brands. Search this forum for "lifts" and you will get lots of opinions.
btw, you start with buying a 4" or 6" lift kit of whatever brand, installation can be a time consuming process to remove and replace the entire suspension so you pay someone with a good shop and lift to do it, then you need new longer Bilstein shocks, then you find out that you need a new front drive shaft to accommodate the higher lift, then quick disconnects sounds like a good idea as long as you have the old suspension all torn off, big tires sounds like a cool idea, you don't want your Jeep looking silly with a big lift and little bitty stock tires, then find out that the new big tires don't fit in the spare tire well, then you have to buy an outside spare tire carrier, then you need skid plates so you can safely do some real off roading, then rock rails seems like a necessary addition to protect the sides of your Jeep from being crushed by big rocks on the trail, then a brush guard and off road lights sound like a cool addition even though it's just for looks, likewise for an expedition type roof rack, and on and on. The cost of the lift kit is just the beginning :-( See photo.