What you gonna use the bike for.? If you're planning light trail rides and to/from campground runs ,a KLX250 will be fine. I weigh 215 and ive had a blast on my neighbor's KLX. A Suzook 400 would be nicer for more aggressive riding and higher speed street riding but you maybe pushing your 350 lb aggregate limit a little too much. by the way my old XT 225 was fun too...you canstill find good used ones cheap.