Have there been any videos posted of dumpers? I'm curious to see if there is any cloggage or missing because the balls are interacting with each other as they come out...
We're probably going with a short range shooter; tests show it's very accurate, and at a rate of ~3-4 balls per second, we should be able to unload just a little slower than a dumper... just with the added benefit of being to start earlier

Not that dumpers aren't a viable strategy. I predict we might see one on Einstein this year.