I'd love to see if the StopTech dust boot survive track use.
I would assume StopTech would know by now that they need heat resistant dust boot.
I have tracked my porsche heavily and the dust boot survived. I say survived, not look like new
I think AP racing is better for the track but resale value of the stoptech is guaranteed to be easier.
I will certainly end up with the Essex because I only track the car but I like the reputable stop tech brand. many of my friend track stop tech on the track and are very happy with them.