Gen 3 v10 vs Gen 2 v10 flatwater speed - by: Epicpaddler

I know this topic has been addressed before, but most questions are geared toward the downwind performance of the g3 Epic v10. 

I'm looking to move up from a v8pro for mostly flat(ish) water racing. Since the g2 v10's can be had relatively cheaply would it be better to pick up a g2 v10 for racing, or the spend the extra $$ on the g3 v10 for better all around performance? I do very little "real" downwind paddling. 

Thanks