as George and Squidd both said in a way , its because they work very well when setup right , not to say mine is right
but i was running a flathead from George
and did pretty good with it and way better on some tracks than the bigger mower powerfull motors .
but next year as was preluded to I will be running a BRANDY NEW OHV from GEORGE
and from the sound of it it's going to be BAD
and not in the least bit stealth like your little ninja there Squidd