Those guides are the same for hydraulic or cable actuated disc brakes. They're just standard cable housing holders.

Avid BB7 are the only cable actuated disc brakes that I would use, and I think many feel the same. They are very good and will serve you well. They are definitely easier to maintain and adjust. If you're going to be running road/drop bars and brifters, you must use cable disc brakes, and Avid makes the BB7 in a road version (different pull ratio than with mtb levers). Hydraulic is not an option yet for road bikes as far as I know.