well, as far as "updates", how many times has the TC3 been changed? lessee... droop screws added, people using the nitro rack, milling the battery slots, rear shock tower on front, losi rear hubs, etc... xray? lets try... T1, T1evo, evo2, now Factory car. Losi? Graphite plus, offset carriers, belts... as you can see, every car kit manufacturer changes things along the way. as people use the car, they adapt and change to what most try to run. i am currently waiting for my 415 from my local LHS... i have ran most all the normal cars, tc3, xxxs, xray, etc. and i always come back to my Tamiyas... plus, i usually like to be different than all the rest of the guys at the track!