In my opinion, after working around all kinds of brakes-- cantis have the least real stopping power. Darn things squeal a lot too. After V brakes got going, all the MTBs switched in 1 year. Cantilevers couldn't have been all that great. Cantis work with STI levers and they have a lot of retro appeal and they work well enough, but there's nothing wrong with the other kind of brakes.
There's always a lot of tech talk on this forum, and mostly it's good. There are a lot really smart people here. But bikes are bikes-- not NASA spaceships. Most gear choices are of a personal nature in cyclo-touring. *Run what you got* is my motto.