Very fond of malts and have various mates who are too, so we occasionally finish an evening at each others' houses tasting a few...
I happen to love the really smoky ones. Lagavulin is my favourite, but Laphroaig (especially Quarter cask), Bowmore and several other Islay malts are nice in the same way. There's a friend I don't see nearly often enough. Always very happy to get her over, amongst other reasons she's often carrying Ardbeg.
Some of the aged Speysides are good, in addition to other people's recommendations, with which I would concur, an older Glenfiddich or Glenlivet can be lovely in the same way that Glenmorangie is. (I know that Glenmorangie isn't in Speyside. Friends live a couple of miles from the distillery, and it's not their nearest one!)
However, there's a third way. If you want to expand the horizons a bit there are some less smoky malts that have a hint of the character. Talisker is on the smoky end of less smoky, but Highland Park, Jura, Oban have all got an element of it but not in a carbolic kippery way. There's a lovely Jura that they only sell in duty free for some reason. It's probably the same as another one but with a different name for marketing purposes, so maybe one of the fancier Juras might be worth considering.
One last option that's not to everyone's taste is cask strength malt. They clear your tubes, certainly. I was bought a nice Campbeltown one for my 50th, and I would also recommend the Glengoyne.