Coffee Booze, what's your favorite?

Cerridwyn thought this was worth mentioning said

Kahlua does not count, unless you make your own, then recipe please.

A year or so back, I tried Mr. Black at a coffee con. It was pretty good. A few months later, I bought the NoLa liquor from St. Georges. Made in the style of the New Orleans Coffee from Blue Bottle out of SF.

I recently found Jameson Cold Brew and Jagermestier Cold Brew and a bunch bunch more.

What do you like? And why?