RBF600 or 660 shouldn't boil that rapidly corner to corner. Even ATE200 should be OK in terms of predictability.
I've read a few threads re: heavy cars and HP Plus falling off a cliff, and it matches my own experience. I've experienced boiling fluids before and it's a more gradual/predictable drop-off in performance.
Anyways, we all know these calipers suck, but absent a BBK falling in my lap, I'm working with what I've got. Pads are cheap. Gonna try that first and see if I can regain confidence in my ability to stay four wheels on and shiny side up
