My experience is that there is a lot of noise about brakes, and a lot of companies very keen to sell stuff.
My 156V6 runs standard disks and pads. I can hit the brakes and trigger the ABS easily on a dry road. If I keep doing that, they will start to fade. Until they fade, brake performance is pretty linear, the first hit is the same as the third.
My 155V6 runs performance pads. Pagid I believe, but I didn't fit them. Cold, they are frightening. Nothing, then you shove harder and they grudgingly grip. If you hit them a second time with the same force, the car stands on its nose and triggers the ABS. They are very good indeed when hot, but that doesn't make up for the heartstopping terror of getting them hot.
My 3.2 GT runs Brembo 330s and standard pads. Hot or cold I can trigger the ABS easily. Being 330s, they can take more punishment, and I've never managed to cook them. They just stop the car.
I see road brake performance as two things:
1) Consistency of pedal - I should get what I expect to get whenever I apply the brakes. I really don't like a pad that changes its behaviour with temperature.
2) Ability to stop the car - goes without saying.
"Ordinary" pads work well in both these respects. Now on a track, it is completely different, you are going to be hammering the brakes from the get go, so you need pads optimised for hot use.
I think a lot of people buy some "upgraded" brakes as a replacement when their brakes are shagged. They swap the disks, pads and bleed the fluid. They then think that their upgrades are the mutts nuts, because they are so much better than before. A lot of that is down to new fluid, disks and pads.