Really? why gear over ball? Ball diffs are adjustable on the fly, mind you, not a durable as I soon found out strapping a brushless on
As for servo saver, or lack there of, I spent the $80 on a titanium gear servo, indestructible. Seeing as the 22 was more or less aimed at the serious racer, most would have the $80 servo, but if you're really worried about it, Im sure there's going to be a hop up that will add one sometime in the future

