The 415X, 415MSX, or 415KS (Kiyo-Style) does show a lot of promise. The chassis is not a standard 2.5mm chassis. It is slightly different and is made up of a different CF.
On another note, those delrin outdrive spools are dialed (thanks guys
) and have absolutely NO chatter, added steering response when cornering, and provides a more direct feel of power transfer when coming out of corners. I had many mod runs with mine along with some tremendous on power impacts (aluminum bone benders), and they show minimal wear.