I haven't had any white Bordeaux, it's interesting to here that a lightly oaked Sauvignon Blanc blend can age so well. You might be interested to know, there is a winery in Western Australia that makes a white Bordeaux blend that (according to them) ages quite well. I have only had the 2014 and if I was to put money on it I'd say it would be great in 10 years! It's interesting how wines of the same variety can have such varying ageing potential! Thanks for sharing mate!