Sorry it has taken so long to reply, i don't get on here very often. the new DX is a great model, it is far better than the previous models. its lighter and stronger, the frame is different, seat is different (only on the 20"er) and we changed the design of the cranks, so they are way better. I totally recommend the new torkers, especially for somebody of your size and weight, you'll never break it. I put a pounding on mine, i have jumped as high and far as a 7 stair and not faze it. It can handle far more than what i can put it through so far. with the new ISIS cranks its made a big difference in strength and feeling. If your still looking for a uni to get, get the new Torker.