Can't comment yet on it's installation in an Aeromax or SS (until tomorrow

) but I drove an auto S4 Aero down to St Tropez in 2009 and I have the same box in my X6.
I think he didn't drive the car long enough for it to 'learn' his driving style. As a 'celebrity' tester I'm guessing the car was brought to whatever he was, probably having crept along in London traffic for ages, and he did a quick half hour drive. As such it may well appear slow. I may of course have that totally wrong?
In auto mode for me it's absolutely smooth and fine, and works well in manual mode even blipping on down changes.