Just noticed an article in today's NYTimes on varietal grape seed oils: NYTimes:VarietalGrapeSeedOils
I'm not gonna bite on this one. Years ago (by crackey), some company came out w/ a selection of varietal jellies. Bought the entire set and we tasted thru them. Couldn't tell a nickle's worth of difference. And, of course, the conversion to jelly managed to destroy any terroir the grapes may have once had.