>>1442054V-brakes need adjustment on two pads, on two springs and on the cable. Springs are not visually obvious and need tedious trial and error, pads are a major PITA. Cantis should be easier than Vs, I think, never touched these before and probably never will, pads are still pain in the ass. Also you need a very true wheel unless you like either dead travel on lever or constant scrubbing.
Mechs only need you to adust two pads in a single plane to get a gap slightly wider than the rotor, then press the brake lever to position the caliper, tighten it down, readjust pads again, done. It's almost automatic.
Hydros are literally self-adjusting. Pull the pads apart, loosely screw them in, pump the lever until it hooks, tighten them. Done.
Changing pads is dead easy on disc brakes. Take the clip out, get pads out, put new ones in, get clip back on, pull them apart a bit if mechs to account for added thickness. Changing pads on rim brakes requires adjusting them again and is FAR more frequent, refer to the above.
Braking characteristics of rim brakes change as the pads are depleted. Braking characteristics of discs are fairly consistent.
Bleeding hydraulics is admittedly a PITA.
Mecanical disc brakes are pretty much the same cost as decent V-brakes at this point.
The limiting factor in braking should be the tires, not the brakes.
