I'm envious. My downshifting still needs work. My work-around is to, while standing on the brake, downshift at the closest point I can guess to minimize shaft loading. This does not provide max engine braking, but doesn't tear up the car either. I'm done with braking at turn in, in the right gear, and ready to get on the gas.
Fortunately, the Boxster has all kinds of brakes and loves to stop fast without relying on the heavy downshifting. Side note - my old Triumphs had lousy brakes, downshifting was a way of life, as was broken transmissions and diffs.
One of these days I'll get the heel/toe right...
