CX50 are great brakes and very easy to set up, but do not get the Frog.
If you want ultimate stopping power, and since you said you'll have panniers, you'll find yourself wanting some Mini V.
@edscoble started
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
CX50 are great brakes and very easy to set up, but do not get the Frog.
If you want ultimate stopping power, and since you said you'll have panniers, you'll find yourself wanting some Mini V.