Every other brake job is pretty common. Depends what kind of rotors and how hard you are on your brakes, to be honest. You should check your rotors every time you change pads to be sure they are still good (wearing evenly, no glazing, etc...) For my next brake change I will likely upgrade to at least MSP brakes, if not Mazda 6.
just to be sure, the MSP brakes will not fit on these rotors correct?