Gregory at the Hyde Park Binny's, has been telling me to try Douros for a time. I tried a few in the $10 to $15 range, and while they were solid wines, they had neither big fruit nor complexity to rave about. I tried the Rocha, at around $15, because the Tauriga Nacional is the premier grape of the region.
Garnet to dark ruby color. Floral and slightly vegetal aromas. Decent acidity; blackcurrents and chocolate flavors, medium tannins, and the raisiny quality one gets from old style Italian reds (the bottle notes say "heavy maceration").
This isn't a super fruity wine; but I like it better than the 90 rated inexpensive Spanish and Southern Italian wines, since it is more than one dimensional, with some real depth and complexity.