I've been researching a lot for my upcoming purchase. The two lifts that keep coming to the top most consistently are Teraflex, and OME. A 3" lift will accommodate 35" tires and with the rubicon gearing (4.10) you should not have to regear. I would not skimp on a lift. I've heard that cheap and/or poorly installed lifts increase the occurrence of DW. We're talking about a key component of your suspension. I'd rather spend twice as much now and be happy, rather than buy something cheap only to replace it later. Also, some lift kits are "upgradeable."
There has been some mention that Rubicon Express lifts do not void the warranty on the suspension as long as it's 3" or less. I can't swear by that. Anyone else know for sure? Mopar makes a lift kit (so my dealer tells me) but I'm sure it's just a rebadge of another manufacture, maybe RE?