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I used them for this use and they were excellent. However, I had them paired with a 335mm Godspeed kit and the extra cooling of the big discs may have contributed to their long life.
I also have them with the 335 godspeed kit, I did one trackday, and I reckon I used half of the pads in one day!!! and the rears were almost totally shot, they wore tapered for some reason, the leading edge was much more worn, therefore a new set was required!!
I've had 44's and I'm now using 55's with the Godspeed kit. If I were you, I would go with the 55's as they offer a lot better stopping power than the 44's did.