ive ridden both. i own an m3, and have ridden an m6. chumbas are literally dirbike frames scaled down. they feel like shit without an engine. so shut up.
ok, the cranks, derailleur and headset reducers havent arrived at Wrenchscience yet. then they have to build it. the parts are expected around the end of next week. THEN i have to pay for the 2nd half of the thing.