I've been running Duro HF904 tires with good results on my DR350 bikes for some time. When I bought my DR650 in march the tires where almost gone and being Avon gripsters where more pavement oriented than I wanted. I've put 7000 miles on the 650 in the 2.5 months I've had it. About 6000 of those miles were on this tire.
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I thought the big thump of the 650 might really eat tires but I'm extremely pleased with the Duro. $72 from American Mototire with free shipping. Great value.

Jim Randall