Buy the best set-up you can find from the begining and you'll never have an issue.
I posted in your other thread but the kit that Team Z makes is currently the best system out IMO. It is on special this month, you will not be dissapointed. www.teamzmotorsports.net
I had a set of UPR Double adjustable uppers on my car and the weld broke. I took them off and had a friend weld them back up. When I asked about how my small HP car broke these race uppers I was told it was probably a bad batch??????? Does that mean others in that batch had the same problem. I'm glad it was only on the street when it happened and not at the track.
They were very harsh for street use so I decided to go with Urethane bushing control arms from Summit. They ride 400% better and I am happy with them.
i had this set that I got from ebay...i think it was granatelli control arms.... No complaints from me ...next set i get are either lakewoods or griggs.