You can't judge the brake system, including the calipers, until you have tried at least two good (expensive) sets of pads. I have tried & like Hawk, Carbotech, Porterfield & Ferodo pads. 'Hawk Blues' are very hard and have amazing bite but 'Hawk Blacks' are easier to modulate.
You also have to bleed the brakes very carefully (tighten the bleed screw before the pedal hits the floor / after you think you're done, do each wheel again). If you aren't doing it yourself you have to go to a 'race type shop' & pay more than normal. If you change the pads (& rotors because they are bedded in) at the track you will have way more confidence & way more fun, but you (or the person teaching you) have to know what you're doing if you're working on brakes!
I want a BBK but more tires, more entry fees & more gas has always won out.