I normally just shop around a lot for whoever's the cheapest at the time.
If you can fit larger discs(4 stud) I would do this as leverage is what you are after, I keep forgetting about the poor brakes on early mondys being so tiny, but I would do as said with ST170 stuff, depending on how much you want to spend ?, I just use cheapo discs and replace every 2-3 years, as usually dead by then with me!!
tabetha