[asid61]

I assume you know how both of these work?
Anyways, ball shifters require less force to shift but one of our mentors doesn't like them, as they wear out in industrial applications. But for FRC, wear is not really a problem with them I hear. The Vexpro ballshifter is lighter than the WCP shifter.
Open shifters are probably not going to die ue to carpet grime as long as you wipe them off after a regional.
We used a ballshifter this year to winch back out catapult (several hundred pound of force) and the only thing we had to modify was to beef up the pneumatic cylinder so that it would have enough force to shift.