I have a set of AP 4 pot calipers and discs.

Caliper with integral dirt seals and 330mm/28mm AP discs on there fixed He30 bells with mintex m1155? pads and goodridge hoses with 'good' fluid castrol srf.

I canot fault this setup, no real brake squeal problem, no vibration at all and imeanse stopping power with good feel and no fade.
Circuits pose no problem to these brakes, the only thing i will warn of is the high cost of replacement discs and pads, and get them fitted by a professional.

Luke

 

No fade? You can make any (conventional material) brakes fade, you just ain't driving hard enough!