It's a good question to which I'd like to know the answer. So let's take a poll.
Mine's on 33k miles at present with no sign of imminent need to change.
Moz
i have just purchased the Tarox discs and pads front and rear they look really good quality and the company were easy to deal with, here is a couple of photos and yes for the mechanics out there they are on the wrong side of the car as they are directional . i will get to put it back together over the next couple of weeks and then let you know what they are like in the real world .