I never said I'd use them on the skyline, they had a set very similar to APRacing so I'd be lying if I said it wasn't obvious where I think their design is from.
I've got the real deal AP's, but fronts and rears in the size I've got WILL set you back loads more than any of the china/Korea made kits. Eg my calipers new are 4500ea fronts and 2200ea rear. Then hats, brackets, pins, lines, that's another 2000. Then pads, and discs.
So I agree the k sport is a much better option than sumitumos without going overboard on what is essentially a fast street car.
It would be smart to see what replacement discs and pads are for the k sports, surely they're very affordable which has to be one of the reasons you see more and more cars using them
I've been in a few cars with them now and they seem fine, so once the Supra needs discs and pads replaced I'll use a set of k sport instead.