Very interesting mix of Laphroaig medicinal notes and Lagavulin's meaty savory smoke notes with lots of sherry. The 15 ups the sherry influence from the 12 and makes things a bit complex in identity. Nose is medicinal out of the glass more so than the Campbeltown's I've tried. Smoke seems light definitely more about the anticeptic medicinal with a light sherry funk of Macallan or Glengoyne. Sweetness and dark sherry fruit of raisin and plum behind all that. Palate is where Bowmore really shines and changes dramatically. Start with more medicinal and some smoke and pepper immediately changing into the sweet vanillas, caramels, and ripe red and stewed sherry fruits. End of palate you really taste the Jim Beam casks of apple, vanilla and caramel fading into savory meaty smoke oak and a slight bitterness both of apple skin and the oak tannins. Leaving you with a taste of sweetness, smoke, oak, apple and a hint of pear. Really interesting and underrated of the Islay distilleries. It's a bit simple and straight forward but changes things up and has it all smoke, peat, sweet, fruit, oak the 12 is good, and the 15 in my opinion is a bit better. I really like the Beam cask influence that is noticeable.