I can't comment on either of those bikes, but I was in your position 8 years ago. I was 275 and decided I was going to commute every day instead of buy a second car. I bought a Trek 1220 which was about $800. I didnt feel too bad about spending that much because it was a lot less than a car. I finally retired that bike in January with about 32,000 miles on it. It was very reliable and held up very well. I have a Bianchi Volpe now, which was also around $800. Its been good so far, but the rear wheel it came with was defective and kept popping spokes. I was without a bike for about 3 weeks given all the repairs, but they made it up to me by giving me a better wheel at no charge. Good luck with your commute.