Revy for Rebel LE
After my experiences with the Rebel LE, I would highly suggest getting a Revolution. The side-mounted vertical feed doesn't seem to stack enough balls for any amount of sustained rapid fire. Other Rebel models with the powerfeed probably don't have the same problem because there is a stack of balls in the powerfeed, elbow, and hopper neck ready to go. Because the side-mounted vertical feed is so short on the Rebel LE, basically what you have is what is in the hopper neck and maybe 2 more in the vertical feed. I played for a while without one and chopped plenty of balls, but the Revolution helped stop that.
If I were you, I'd play for a while to see if you have a problem chopping balls. If not, why spend the money if you don't need to?