Why aren't we emphasizing that the best feature of the AP racing setup is the removable bridge for pad replacement? This will make life so much better for the track day crowd. The purchase price is almost justifiable with just that one feature.
Caliperfexion also sells a set of sleeves for their caliper studs that support the caliper and allow you to pull the caliper away from the knuckle and remove the rotor without having to handle the caliper assembly. They cost like $45, not listed on their website.
I got my set of Signature SV104 wheels in gun metal(and brake dust) two weeks ago. The weight savings is great; 10lbs per wheel. Car accelerates so much better now. Here are a couple of pics I grabbed in a parking lot the other day: