I've got an 01' XR400, I love it. I'm about 5'10 and 240lbs. Good, strong, reliable bike, with very little to break (i.e., radiators). I've beat the crap outta mine and she's still goin strong. Good bike to start out on. I believe the 400 and 250 have about the same dimensions, seat height, etc. Nice plush ride, its like a Cadilac compared to MX bikes, and they still jump pretty good, wouldn't do any massive triples with stock suspension though. Next bike will probably be a KTM 450 EXC, Mmmmmmmm, electric start, Uuuggghhhhh. Gotta love the magic button.