Can of worms alert! Or, opinions are like.....etc.
Seriously, there are a number of great 2.5" kits out there that will do the job for you, and, most importantly, be of good quality and provide great long term performance. If you spend time on this and other forums you quickly learn there are brand fan boys and brand haters that all apparently have a webfooted first cousin that bought the AEVRCRKSYNERGYTERAFAIL lift "and it sucked, and they suck and anyone who runs one is a dickhead..." etc. Bottom line, you're on your own. You can cheap out and get a kit that will lift the rig, but screw up the roll center, steering, etc., or go for a full featured kit and accept that you get what you pay for.
Personally I see no sense whatsoever in buying a $40,000+ performance oriented vehicle, then sticking a deficient $500 suspension on it. But, it's your call. In the end "you pays your money and you makes your choice."
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'09 JKRU. 4" Teraflex long arm, Teraflex R44 housing, Teraflex / Fox Resis, Poly skids, Nemesis Billy Rockers, Nemesis flares, 37" ATZ P3s on 17" 5x5.5" Trailready HDs, Spyntec hubs, Yukon Hardcore lockout hubs, Teraflex BBK, Mopar BBK master/booster, Superior front & G2 rear axle shafts, CTMs, Reids, Synergy drag link & tie rod, 5.38s, TF Dual Rate front bar, TF bumpers, Warn Powerplant, Tom Woods shafts, AA xfer case cable, Kilby canister relo, RH4x4 cage.