myself i like the OS engines myself.......had realy excelent luck with them........i did buy a wasp for my savage & wish i hadnt because that engine is a pain in the @@%^##@!!!
They're both great engines, but you can't beat the OS for outright reliability. I just sold a CV.12 that literally keeps on ticking. Ol' faithful, as I called 'er. Ran strong, and held a tune all day long.
I am kind of leaning towards the os because of reliability and ease to tune. My buddy has a nitro rush with a xtm 18 and it is fast and he swears he will smoke my truck with a os 18.What do you guys think?
i'd get the os 18. i had 1 in my rc10gt. ran strong, keeps a good tune, i just couldn't keep the rear wheels(rpm) from stripping.
go os i'm sure you'll be happy.