Two stroker off roaders are the spawn of Satan! They're bloody awesome, but tricky little gits to use and soooo fast. Last one I had a go on was Couch's KTM200. I managed to get into the bottom of a valley and stall it...could I get it to just pull me out slowly without wheel spinning and putting us both straight back down the hill again? Could I buggery! That said, on the big fire trails through the forest, flat stick and it makes perfect sense
4 strokes are definitely more user friendly.