I've made a blackberry wine that I think will be awesome, if early tasting plays out later. It goes without saying---but I will---that at my house the blend of blackberry/raspberry/blueberry that goes into the Dragon Blood is a definate hit with everyone. I couldn't get the flavor I wanted in the strawberry or peach without adding extracts, but they turned out great with the added flavorings (natural extracts, of course).
Hmm. I like the idea of blending the blackberry with merlot, since I have both clearing right now. I am yet to do much blending at all, so I think I might have to try it with these.