i have a e10 and there great drifters out of the box but dont have alot of aftermarket support yet b/c there new. from what ive heard from others is that there not good for upgrades due to the plastic drive shaft. so if you dont want to upgrade the suspenion or motor get the e10 if not id suggest a sprint2. i use my e10 for rallying and i use my sprint2 for drifting