yep and with that insight I believe I will go with the mmm 2200kv. gearing is the most critical with the summit but did some research and found a setup. mmm v1.2 i think is the best for crawling and for $50 more than the ezrun its worth it. you just don't get the fans. im still confused about speed, ive read 30mph in a mmm summit on 4s but basically with me running an mmm on erbe tires i would think it could be much more. and they are still almost identical. now I think ebay has an mmm for 247 which should be a good place to buy from, right?