RE: XTM 24.7PRO/Picco .26 /OS 21RG(x)
I've had the picco, never had any tranny problems with it. Im currently running the OS .21 RG. I can smoke a .26 on the top end, but my torque isnt as insane as a .26 wasp, or picco. I still get wheelies real easy, but theres a world of difference between a .26, and a .21. The XTM pro is supposedly a notch below a picco, or wasp, in power. Although i have seen an XTM pro run, and i thought it was as fast, or faster than the picco i had, and the wasp my friend runs. All of those motors are good choices.
Matt