UPR = Unethically Produced Reproductions.
BMR. I've started another build (2nd gen F-body) and am only looking at BMR because of my past experiences with them and their parts. They are a bit more expensive but I don't really concern myself with that if I know i'm getting quality parts. And no, I've never run any UPR products. If you can afford them I would stick with BMR.
Is this even a serious question?
BMR hands down.

it's a n00b question.........![]()
BMR for sure.
Just be sure you ask who the five best rappers of all time are. Think about it.