Rear control arms ==>what brand?

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??????? :shrug: 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. :nonono:
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.