My weight has fluctuated from 310 to 195 and everywhere in between and I have rode cheap Shimano wheels to top of the line Mavic wheels. I have broke three spokes on the rear on a set of Shimano R500's when I was over 300lbs. That's it, I own a set of Mavic Elite S that have over 20000km and a set of Mavic Ultimate Carbone Tubulars that have over 40k on them. Ride smart, avoid potholes and curbs and don't be bunny hoping **** and almost any wheel set will hold up. Get what gives you piece of mind but don't fret to hard especially at your weight.