Bill, as much as I love the DRZ, the WR is a better bike for competition or for aggressive trail riding. More power, better suspension, and a little lighter. The DRZ will probably require less maintenance, since it has a lower stress motor. Depends on what you want, and what you want to pay.
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Hoop
2006 XR650R, the dual sport bike
2004 DL1000, the street bike