RE: mega p ?
I havent ran the the .21 mxt that much but i have run the .18 one, they are basically the same. The mxt holds up really good, plastic is very flexable and not easily broken. The rancho is beefy but more of a buggy than a truck, only difference is really the trans setup. The parts for the mxt are inexpensive also. I would reccomend the mxt with the .21.