I have to disagree with some of you a little. I have been riding a Ducati 998 for the last 5 years and my SD for the last 4 months. I have to say the Testeretta engine is siky smooth in comparison. If I had to mention a couple of negatives about the Superduke no 1 would be it's too buzzy and no 2 would be more power please! Don't get me wrong I love the bike but there are definitely smoother high capacity V-Twins out there.
We also have to remember the purpose of the bike. It is the ultimate Street bike for what it is designed. High speed long distance bike it is not. Although I am leaving on a 7500km trip in about 24 hours on it