Something like a Kilo WT or a Surly Steamroller would be a good for a bigger guy. They're both steel, I don't see either one of them breaking and I would put them over a 735 in strength anyday. My Steamroller won't dent no matter how rough I am on it. And with both those frames I named you can run up to like 38c tires for extra cushion on ****ty roads. Just my 2 cents.