If you can find the Expert Carbon Disc, get it, fantastic bike. The Pro is worth the extra money if you can afford it, and you can find one. If not, you will be happy with the Expert Carbon Disc. I bought the last one within 50 miles, and it was a Large Frame. Exact size for me. I LOVE it! Couldn't be happier with the choice. Cause at the end of the day, that's what matters, since you will be the one riding it 60+ miles a week.