I'm just wondering how fast I shoot...I chop balls all the time with my normal hopper, so I'm getting a revvy. It's a 9v, which means 6-8 BPS. If right now I'm getting 2 or 3 then 6-8 should be plenty, even with my soon-to-be-shortened-and-lightened trigger pull.
The 9v would be fine even if you're shooting 8bps. If and when you do start out shooting your hopper, you could buy an up grade chip that will make it a 12volt that supposedly feeds faster than the regular 12V ... Here is a review from warpig.
Sorry I didn't get it to you sooner m8 (hehe I just said mate ...)... it's a rather recent upgrade though... so it might not have done you any good.
-Micah