AHPC quality control vs. Nacra quality control? Beach crew quality control? Some of both?
*cough* *cough* beach crew.....
I stand by every Viper I've had has felt a bit different. Was it major? No, but some just felt better than others. I completely concede that it could be all be in my head as well.
I do know that I have a sail that is just fackin fast, or at the least the mast settings that I'm running are just spot on for that main.