Cantis continue to work in muddy conditions, hence why they are used in cyclocross. Hydraulic discs are superior to cantis by some margin but don't work with road gear levers, although now the UCI have lifted their ban on disc brakes in high level cyclocross I'd expect this to change and quite quickly. Cable operated discs are, in my experience, utter shite, offering no discernible advantages over cantis and adding a considerable weight penalty.
Cantis continue to work in muddy conditions, hence why they are used in cyclocross. Hydraulic discs are superior to cantis by some margin but don't work with road gear levers, although now the UCI have lifted their ban on disc brakes in high level cyclocross I'd expect this to change and quite quickly. Cable operated discs are, in my experience, utter shite, offering no discernible advantages over cantis and adding a considerable weight penalty.