Thank you. That was well written and informative. On the subject of tubulars, I've never wanted the hassles of them. And, now that I'm riding the lighter, smoother and faster Mavic USTs, there's no need for them. I recently bought a CAAD 12 w/105 mid-compact gearing. My cassette is 11-30 and at age 73 my weight/power is not what it used to be. So, the idea of climbing in a 36X25 is impressive to me.