it's all a matter of you get what you pay for. There is absolutely nothing wrong with RC lifts. They do their job. Are they rough riding, yes. Are they the best quality, no. Are they the flexiest, no. Are they good all around lifts, yes.
I personally run a RE 3.5" superflex lift and it is great and was very reasonably priced at $400 for the quality and completeness. I know several people who run RC lifts and they're fine.
The one thing to watch out for is that they tend to not be as complete as other lifts. For example, a friend just recently ordered a RC 4" lift for his YJ and it took him a full week to install it b/c of missing parts he didn't know he needed, RC sent him a bad ubolt, etc. My RE lift took all of 3-4 hours to install and was complete.