The Baseline kit is really nice and is around the same price as the teamz kit but has some adjustment. I don't think I would get rid of a baseline pro launch 2 kit or a teamz upper kit if it was already bought and on the car.
If you are buying new from scratch the outlaw kit seems like the way to go.
I just put the Baseline outlaw upper setup on my car, but haven't had any real testing yet. Went to the track and had nitrous problems, the nitrous was delaying 1 second plus at the hit, all I can say is I never spun the tires on motor LOL.
You can't go wrong with either company, customer service is top notch from either guy. But if the price is close, it seems the logical decision to me is to go with the outlaw uppers with adjustability. For ultimate adjustability, go with Baseline's Outlaw uppers, then TeamZ lower ctrl arm adjustable brackets.