Eric, Cowface has a side feed evo-cocker, so he can't have a vertical feed, to do that he would have to radically machine the body to fit a vertical or replace the body, plus the power feed actually puts more balls in the stack than a vertical feed (unless you have a stupidly high vert. feed) The power feeds I have found work better than a vert feed due to the larger amount of balls in the stack the issue of "air" shots doesn't appear, you have the benifit of the hopper being centraly mounted plus the ball stack, plus you can switch the paintfeed off......oh and its cheaper than a new body or machining.