Macallan bottles over 12 years are pretty pricey. I personally find the 12 year overpriced as well, but that's just me.
And OF COURSE you should stick with scotch, are you crazy?
Macallan fits under the category of sherry scotch, and is made in the speyside region of Scotland. Sherry means it is aged quite a bit in barrels once used for holding sherry wine. Most scotch whiskies are aged in used bourbon barrels, then some distillers put them in other kinds of barrels for a while to give them unique flavors. Sherry whiskies are more floral and sweet.
Peaty whiskies smell of smoke. A lot of people will ask if they have had a pest whisky before by giving names of what they've tried, or will ask if a whisky is a pest whisky. Trust me, you will know when you have peat whisky. You will open the bottle and be certain someone stored a campfire in there. And you'll know you had it because the next morning your mouth will still taste like you ate the ashes of the campfire they stored in that bottle. I'm not a fan of them, but a huge amount of people are. I just can't stand their taste, but I hear it goes well with meat.
I would most definitely branch out. Even after you find a favorite, keep sampling and trying new things.
Also, we are lucky you stuck with us after having the 10 year fine oak. I had to have a friend prevent me from pouring that gag water down the sink (seeing as I had to pay $50 for it).