I need some help on what dirt bike I should buy. I am 6 ft 4 and 215 pounds. I have never rode a dirt bike before but I have no problem picking new things up and I own a suzuki vstrom 1000 and also drive harley fatboy, so I'm not new to motorcycles, just dirt bikes. I would be doing mainly trail riding and if I do all the maintenance on the bike myself which would be a better bike, 2 stroke or 4 stroke? Could someone that has never driven a dirt bike before hop right on a yz250 or a crf450 and learn fast enough for it to be okay or would something like a yz250f be the better option?