Unfortunately my "tours" last summer were little more than 4 day weekends, too many family obligations. Anyway, I switched to an SP Dynamo last summer and am very happy I did so. Coupled with a Sinewave Revolution I never had to worry about the charge on my cell phone. My daughter was so smitten with the Dynamo that I built her one for her bike. Neither of us notice any difference in rolling resistance when riding and I'm not sure I'd build a front wheel without one unless my sole concern is speed.