I've had the HPS5.0 for over a month now, front only, on slotted rotors. So far so good. I installed them myself and I was afraid I did something wrong at first because I had no breaking power (expecting a neck snapping brake at 20-0, but it was way too smooth), but it placed itself after a while. Not sure if it's the pad breaking in or the rotors or the brake fluid pressure adjusting itself, but now it brakes well.
So far, there is certainly much less brake dust for me. They brake really well and makes absolutely no noise (not that I expected any).
Since they were cheaper than the OEM pads, I recommend going with those. I don't know how they would fare on a track, but short of big brakes, these are probably the best.