I’ve been getting great mixed street/track use out of my 380mm AP Racing BBK, running Pagid Yellow RS29 on it full time. I’m on my 3rd set of pads and the discs are down to 30.7mm, so they’ll need to be replaced in the next 6-10 months depending on when the track days fall.
Rather than replace the rotor rings on the AP kit, I might upgrade to something better. This Brembo GT-R kit seems to have grafted a few techniques from the race calipers, without requiring semi-annual rebuilds. It’s a forged, one piece caliper that allegedly lets all of the heat dissipate.
It’s a bit spendy at $8500.
http://www.redlinespeedworx.com/brembo-presents-gt-r-braking-systems/