I have had some that taste just like that, but I have got to say that I am a firm fan of Lagavulin 16yr old. Caol Isla and Mortlach are also very nice but my absolute fave is Port Ellen. I saw some bottles a few years ago and kept putting off, because the wife said so. Finally threw caution to the wind, ready to buy 2 bottles @ 80 each, got there, sold out. Never forgave her!Though I'm a Scot with a liking for whisky I find the Islay malts just a little too much like TCP.
On a serious note, I can tell you what I like, it doesn't mean you will. Go to a good whiskey shop and try them. If you are a member of a club, you might even be able to get someone in to a taste testing evening, for a small cost. But your taste buds will tell you. As for water or not, well I always test the same way by taking a sip after each of the below.
2 dip my fingers in a glass of water and put 2-4 drops of water
3 pour in some water.
Location is also very important, beer and whisky etc all taste different in their native area, that's why like local beer tastes different on holiday. If you read "Three sheets to the wind" he explains it well.
Be prepared to spend a lot of time on 'research'. 🍺☕️😆