No, I'm afraid not. I have had the 12, 15, and 18yr expressions from Glenfiddich. I didn't care for the 12, the 15 was alright, and I spit out the 18. Couldn't stand it. It had a dry, tartness to it that I just couldn't wash out of my mouth. It was really foul.
However, being the good Scotch drinker that I am, I tried it again about a year later. Spit it out, again... Still foul.
I don't think I'll be reaching for another 'fiddich on purpose. At least, not on my dime.