I am running Avid Single Digit 5's with travel agents off Shimano 105 STI levers. The modulation and control is fine, but I am far from satisfied. I hate the pad wear (Avid 20R pads; seem too soft a compound), and I would like to get rid of the travel agents. I actually think canti's might be better, but have to figure out the center hanger issue.

I haven't spent much time on this, as my butt has had priority, but it is interesting to hear that someone with Canti's wants what I have...