The "do everything" tank - Surly LHT

I really rate cantis, I'v hurtled down Jerningham Road in the pissing rain many times and my cantis always work much better than the sram rival callipers on my road bike. I've also screamed down alpine roads, overloaded, and the cantis performed excellently then as well.

I know that doesn't answer your question but cantis are bloody good.

Agreed. But they have to be set up well. And the set up can be fiddly.