I have to disagree with a lot of you on both situations. I have raceland coilvers, and XXR wheels in an 18". My coils ride fine. Don't have any noise issues or seal issues. The front dampening and stiffness if pretty good actually. My only complaint is the rear spring stiffness. Kind of weak if you have wide wheels and go low you may have rubbing issues. And my XXR's have held up great for about a year now. So I guess it's all in your own personal experience but a lot of people hate on both just because they are cheap but don't hate until you have your own issues because some people might just abuse their things and blame it on the product. I have had a great experience with both and I would recommend to any honestly.