[BillG2A]

Thanks for the comments, very helpful.

I ran at three track days this season at Atlanta Motor Sports Park (AMP). My sons also drove in novice sessions at two of those events, 15 - 20 minute sessions, so maybe 200 miles on track plus 1,000 miles of street use.
AMP is considered a technical track ~ 2 miles 16 turns significant elevation changes.

Your consensus analysis was correct - The Power Stop Track Days pads were competent, never failed to get job done, but did fade during the end of the fastest sessions, requiring earlier braking. For beginner and intermediate lapping for a track day they are fine.

Require a bedding procedure, good bite and modulation, probably great for auto cross. My track setup included Motul 660, stock rotors, bled brakes after events, 911 GTR brake spoiler/scoop on control arms (pictures below). I will be switching to Hawk DTC - 70.

On the street they did sing when cold and produced lots of brake dust.