Still need more information....like, how much are you willing to spend? YOur best bet is to go to a good bike shop in your area and see what they fit you with. FYI, I was above your weight 8 months ago and started with 15-20 min rides 3 miles or so, now I go on 3-4 hour rides, have lost 40 lbs and don't even feel like I have ridden unless I get a hour in...and love every minute. I started with a mountain bike, and have since acquired a good road bike and a cross bike....and am considering another moutain bike.