Then yea it probably is worth it. I saw an article comparing a bunch of .18s and the XTM was right up there in power, expecially torque, and was one of the cheapest ones in the comparison.
My friend also had one in his MT and it hauled ass.
Thanks for all the help guys, I put the xtm .18 in the rc10 today and it seems to run fine. I Have another question it seemed to be faster in the rush could that be because i have a rpm pipe on it instead of a of a torque pipe.