My 2006 I had for 5 years and 45,000 miles was great, quick and comfortable. My 2007 I have had for 6 months and 8,000 miles is great and comfortable, but noticeably less quick off the line and the mileage, (true, not indicated) is several miles per gallon lower. I have the same Givi windshield and topbox and just cannot squeeze a decent 0-40 which made me fall instantly in love with the 2006. It is still faster than cars, but motorcycles which proved only a slight challenge to the '06 are now pulling away consistently. Previously I had posted related to the acceleration vs 650 motorcycles and it is possible that the '06 was the fast anomaly and the calm 2007 is more the norm. I am hoping someone may have a suggestion or two.