I experimented with different brakes on my wife's mixte and MAFAC Competitions with were the clear winner, even though I had to fabricate an extra long bridge wire to clear the seat tube. I've always hated MAFACs, but I've learned that you just have to take the time to get them set up right and you have to use Koolstop salmon pads.
http://community.webshots.com/photo/...8014369VNpklt#