Caol Ila (based on the 12 and Moch) hasn't been a distillery that's overly excited me. Good but not top of the Islay pile personally. From vague memory the 18 is similar to the 12 but I think I like it more..not sure why maybe passage of time. Warm gentle peat balanced with sweet vanilla, lovely gentle finish. Definitely in the low to mid 4 range. $130 USD is fair for its age especially given it's an Islay malt. Whilst I could easily drink my way through a bottle in a blink of an eye as its very good and approachable it's still not one that excites me or blows me away