I have cantis on my tourer and can pull stoppies with loaded panniers, so no rush to upgrade. However, I recently rode a Bacchetta Giro 20 with discs and a Strada with sidepulls back to back. The strada felt underbraked in comparison. That said, I recall finding v-brakes over the top, and my sis' has some hyrdralic discs on her trek that are ridiculous - you can throw your feet off the pedals one finger.