Boca Bearings vs. Acer bearings...ceramic sets.

Unless your sponsored and are getting them for free, they aren't worth it. Even then it doesn't make much of a difference. I bet you are very rarely going full throttle and thats the only spot where you would get any performance gain. For most speeds you motor has more than enough power to overcome the friction of regualr bearings. You might gain a few seconds of runtime, but nothing that would make a difference.