iv just heard that they can be bouncy, but i guess what kind of shocks your using can effect that. and also that they are very loud, like creeking noises that you can hear from inside and outside the car. but i have also heard a lot of good things about GCs too. everybody that has H&R sport springs seems to love them, im not too sure if im going to like being stuck at the same height though. im totally split between the two :roll: