Always the best way to try wine. My favourite was an Australian blend, Nepenthe Tryst, which I mistook for my favourite South African sauvignon blanc, the Berrio. The Tryst has a similar fresh acidity, stony and clean. The difference, I guess, is in the slight touch of sweetness the Australian has. This vintage it's just sauvignon / semillon.
Also very tasty was a white rioja, Cosme Palacio, which I haven't tried for a couple of years now. Loads of oak, of course, and 100% viura (which ought to mean dull in my predjudiced worldview), but which was ticklishly complex, full bodied and long lasting in the mouth.