I'll admit I've never had the Macallan 10...I love the 12-year, it's an awesome standby, with a little more complexity than, say, Glenlivet 12. The 15 Fine Oak, however, is on another level. Equal parts smooth and complex, rich and subtley deep. To each his own but it's currently my absolute favorite.
I'm not a fan of smoky Islay malts, so Laphroaig isn't a favorite, though I will not discount its merits. If you like that, try Talisker 10. I describe it using one word: volcanic. It tastes like it was filtered through obsidian.