I toasted the stock 2-piston sliding caliper brakes from Autocross, and that was when I was first starting out and not as fast.
The 4-pot Brembos with good lines, pads and rotors are a brilliant upgrade and are really all that's needed for any amateur level of corner-carving, from autocross to track days. Some good brake ducting available from a variety of vendors might be needed for track days.
The other advantage of the Brembos is that you can swap pads very easily, allowing you to use a variety of pads for different uses.
The 6-pot Brembos from the '13-14 GT500 are extremely heavy, difficult to fit inside of a lot of wheels, and are only marginally better at heat dissipation and stopping power than the 4-pots with good pads.
Now, if you're driving competitively in time trials, W2W, etc, then you might need something more hardcore.