ITs all about the tuning. If your lbs has a good wrench, then Tiagra can shift smooth as butter. Maybe not as crisp or light as Sram or DA, but for the price, and the prices for replacement parts, Tiagra is hard to beat.
BTW, the '09 CAAD 9 came with a sora FD on my Tiagra group. I think they were all like that.
Last edited by rangerdavid; 11-18-10 at 07:25 PM.