This is my personal list of whiskies and impressions on them (if I remember it).

Method of tasting:

• Use tulip-shaped whisky glass e.g. a Glencairn glass.
• Add 25ml of whisky.
• Check the color.
• Whirl the whisky to the glass walls to see how thick it is as it drips.
• Use water to rinse your mouth before nosing or tasting.
• Smell the whisky.
• Taste the whisky.
• Don't drink water again right after tasting the whisky, wait for the finish.
• If whisky is 40+ abv, add one metal teaspoon of water to the whisky.
• Repeat.

Lowland:

• Lowland whiskies are usually floral, grassy and light.

• Glenkinchie 1999-2012 Amontillado Cask - Distillers Edition, excellent, fresh
• Glenkinchie 12, good, light, fresh

Highland or Islands:

• Highland whiskies are usually floral and honey-like, but peat is common.
• Island whiskies are usually peppery and heather-like with maritime notes.

• Loch Lomond Original, decent
• Highland Park 12, good

Speyside:

• Speyside whiskies are usually fruity, sweet or spicy.

• Glen Moray Classic, decent
• BenRiach Peated Quarter Casks, decent
• BenRiach 20 (the white-blue bottle), good, fruity (pear)
• Glenfiddich 12, decent, sweet
• Glenfiddich 15, decent, sweet
• Glenlivet 12, meh
• Macallan 21, good, very sweet

Campbeltown:

• Campbeltown whiskies are usually salty, toffee-like or vanilla-like.

• Glen Scotia 15, good, salty
• Glen Scotia Double Cask, good
• Glen Scotia Victoriana, good
• Springbank 15, good, salty caramel but complex so can differ

Islay:

• Islay whiskies are usually smoky, woody or peaty.

• Bowmore 12, decent, woody
• Caol Ila 12, decent, smoky
• Lagavulin 16, excellent all-arounder, more woody than smoky
• Ardbeg Corryvreckan, legendary, very smoky

Other notes:

• American white oak casks brings vanilla-like wood aroma.
• Bourbon casks bring rounded sweetness.
• Sherry (and other wine) casks bring sharp sweetness, wine-like.

Peaty Whiskies

Smokiness and peatiness are two different things.

Peat level of a whisky is measured in ppm (parts per million phenol). The higher the ppm levels, the peatier the whisky. The score varies between 0 and 170.

• Octomore, ~160 ppm, chemical
• Ardbeg, ~55 ppm, iodine
• Laphroaig, ~40 ppm, cigar
• Lagavuling, ~35 ppm, cigar
• Caol Ila, ~30 ppm, cigar
• Talisker, ~25 ppm, woody
• Bowmore, ~25 ppm, woody
• Highland Park, ~20 ppm, bacon

Pay attention to ppm, but taste also depends where the peat actually comes from.