Fill out your profile. What model Jeep do you have?
I've installed a RC 4" lift on two different TJ's and have it on my current TJ. Can't beat the price which is why I bought the RC kit, the budget just wouldn't allow for anything else (found mine on eBay for just over $400, deals are there if you're patient).
Easy to install, took two of us about 5 hours with breaks for
It had everything in the kit with lots of extra small parts that came in handy. The quality matches the price, no complaints there. It included a drop pitman arm which I would not recommend installing right away, try it without it first and avoid the bump steer problem.
The initial ride wasn't stiff, it was more like driving a skateboard over rocks. It loosened up quite a bit, it's still pretty firm but flexes well off-road (I've abused it regularly). Different shocks help a lot, go for the adjustable shocks, don't get the nitro's, they'll beat the snot out of you. The kit also included drop brackets for the track bar, if you can pick up an adjustable one I would go with that option.
Kit also included lower control arms that are very strong, only complaint is that they had zerk fittings on the bottom on the bushing housing, they lasted about a week (I understand they have since changed that design).
Everything lined up well, driveline angles are good and nothing has broken. I have a tire/carrier combo on the rear and a winch on the front and there is some sag after a year+ but not that noticeable. I've since replaced most components with RE stuff and some other brands but for someone on a budget I have no problems recommending the RC lift.
I've never had to deal with RC on warranty or missing parts but I hear they are very good dealing with any issues and I've talked with RC reps at various shows and expos and they seem to backup their claims.
For the budget buyer I'd give it a