ultegra calipers + otherwise centaur gruppo = good idea?
Hi, I'm about halfway through piecing together a 10spd/double Centaur gruppo to put on a "retro roadie" project and I'm considering whether it would be a better idea to pick up a pair of Ultegra calipers or just stick with Centaur calipers. The reason why I'm tempted to mix-n-match the Ultegra calipers in with the otherwise Centaur gruppo is because I really like the Shimano QR design.
Advice? Is there a performance differential that's worth weighing? I've searched and haven't found a head to head comparison strictly limited to the brake calipers themselves. Thanks!