These are the choice rotors for many pro road cyclist for a reason. Lighter than dura ace, catch less side winds, and plenty of stopping power. The Dura ace versions are also great rotors but if your a little gram concience, and who isnt?.... the XTR rotors are a better choice for road bikes. Biketiresdirect is my favorite online bike parts supplier and VIP program is superb!
After catching wind of world tour riders using these on the road I ordered a set to see how they felt compared to the regular Dura Ace / Ultegra rotors, suffice to say its why this is the new road rotor for the 9200 group.