Kink: I'm getting a kink curb 2012(purple) next week. But my cousin has got a gary young ex sunday bike and that's really good but I like kink better.
GT: Durable, reliable, light weight. You are not bmx riding without one. New or old school the bike is tough,GT has been in the game for a minute which makes them a veteran in bmx bike performance.
Diamondback: They are very strong and also quite light. Been using mine for 3 years now and there are no signs of wear or tear.
United: The bike itself is extremely light and durable. The bike hands down is 9/10 and I cannot fail to mention the attractive trans colors.