Thanks for all the posts and information
I went with local "performance parts" from NAPA. The application that I used was a 2007 Tahoe.
Eclipse reman calipers with brackets, Reactive One slotted bidirectional rotors, Adaptive One ceramic pads. The total came to just under $420
Some comparison shots:
Brackets and two rotors in the background
At first I thought that the caliper pistons were smaller. In the first shot it looks that way, but the second shows the larger piston of the new caliper. Very deceiving.
A comparison of the pads shows only a small increase in contact area. Most of the swap benefit must come from the mechanical advantage. The rotors and pads will be the rest of the improvement. I have had only limited testing with these rotors in the fleet. They do bed in pretty easily and evenly. It is a little too soon to say just how much of an improvement they will be , but with the "rose colored glasses" still on, the improvement is noticeable. Less effort to bring this thing down. It feels much better.