I am a former (01) S4 owner. I was stunned at the performance of the convertible S4, it was amazing. The 4.2 made a hudge differnce. The power is there when you need it. I took it through some bad back roads, and I have to say the combination of the engine and Quattro puts it far ahead of the M3 or ClK/SLK class (non AMG) convertibles. Anyone else have good or bad experiances with this car?