I agree on the Doublewood, have a bottle at home that is near its end.
Some of my other favorites in that price range are:
Clynelish 14 yo (~$40)
Glenmorangie Burgandy Cask (~$55)
Caol Isla 18 yo (~55)
I think the Clynelish is a great value. Both it and the Glenmorangie are pretty well-balanced with the Glenmorangie having some sweetness, from what I remember (haven't had it in awhile). The Caol Isla is a nice Islay. It all depends on your tastes.
Just to give you an idea of my own biases, some of my favorites are Lagavulin, Highland Park (18 yo or older), Talisker 175th, and currently the Glenrothes 72.
Cheers.