[Tom Line]

We had an extremely poor experience with last year's (weaker) version of the vex wheels. In fact, after one of our sister teams ran out of replacements we wrapped their wheels with duct tape so they could complete what they needed to because so many of the rollers had broken.

Vex appears to have attempted to address that issue, but I'm always wary of being the test-monkey on an expensive product that goes into a place that is as critical as the drive train is.

On another note, the modifications they've made to the ball shifter has me drooling. I hate dog gears with a passion after this past year.