Favourite used to be Talisker. Having visited the distillery makes a difference as I can picture it every time I take a sip. However, I have a 16 year Lagavulin and that is absolute tops, although bottle is sadly running a bit low.
Once bought the father in law a 50-year Ardberg, which was good with a dash of water, but a bit too intense to be an every day favourite.
Occassionaly, if I fancy something with ice I will go Jack Daniels. Especially if I'm drinking it in the bath.
Neil