i hate to be another guy with a what bike to buy forum but thats kinda what im down too... I currently own a 2014 300xc and started racing this summer ( i live in Ontario) and had a great time. Just for reference im a mid pack Novice B rider. I love my 300 and grew up riding 2 strokes but i find my bike to be a big handful as i start to fatigue later on in a race. ive had a few people suggest switching to a 250xc-f. Ive owned 4 strokes in the past and enjoyed them. I do figure i might be a bit faster and possibly less fatigued with the 4 stroke i guess my questioned is aimed to anyone who has made the change and if it helped them out in any way shape or form?