I have the RC 4" lift and 1" boomerangs.. The springs are made in canada now and are a million times better ive heard. So far mine is great, no more rough than my old worn out springs and def rides better,i beat the crap out of it off road no probs.and for all i got,it was only $635 to my door! Def good for a budget lift! Rubicon is the best, hands down, but ya pay for it.