Whatever the brand buy the 2nd one from the best/most expensive.
The top one will probably be a bit pernickety.
EG: DraXuS top paint is Hellfire.
Sure, on a good day its awesome, but 2 degrees too cold and you are in soup hell. Id go with Xball Silver.
Zap - top ball is 420, but chronic is a better all rounder IMHO