I have a richochete 2k(dont know how to spell it and i cant be bothered to go and get the box) they feed a ball every time a ball passes a sensor in side the feed rate is like 10-12 bps but i heard that it can do 13 on an Angel (red it in a reveiw from warpig i think, it might have been the angel fly review)
plus they tell you other info like how many balls left (roughly, within 5) and the game time
plus they tell you other info like how many balls left (roughly, within 5) and the game time