Just figure that for the most part, you get what you pay for. Checkout the Rock Krawler kits:
Rock Krawler Catalog
I have the 2.5 max travel with Bilstein shocks and am very happy with my setup. Probably the most complete kit on the market.
It just depends on your budget, how high you want to go, and what size tires you plan to get.
What size lift are you looking for and what size wheels?
The RK stuff is all upgradeable. So if I want to go to 3.5" (maybe when I put on 35's) all I have to change is the springs. You can also start with one of the basic kits and add components over time.
I'm sure Teraflex is the same way, but they don't have a kit as complete as the max travel. I had a few places quote me for a teraflex kit and add the same components and it is close in price, but still more expensive.