My race bike came with Force, compact double and with 11 - 25. I did climb faster with it, but only if the ride had only one major climb. My knee joints couldn't handle it. I kept hoping it would get better, because I was riding so much faster. But when I did one ride last year that had me in tears at the top one climb and with more climbs to come (Fairfax -Bolinas Rd. for you NorCal folks) I decided to switch out the rear for an Apex RD. I now have an 11-32 (I think) and I'm much happier.

Veronica