You think 700×28's are good riding? Wait till you go 27×1 1/4. As someone thats been into cycling for 50 years, it just makes me laugh. Now just waiting to see the next new thing, 5 speed cassettes! Great chain angles, more efficient, chains last longer, and what you do is vary your cadience more, which someone will do a study on and find its less fatigueing. We're all riding on a carousel of time.