I keep Maker's on hand all the time, and swap others in and out all the time.
When my grandfather passed away years ago, he left a small stash of Ancient Ancient Age, which I got and which is some of the best I've ever had. I tried for years to find it in stores, and finally learned that it is only sold in Kentucky. I still have about a quarter of the last bottle from his stash. (I guess it must be at least 25 years old at this point, now that I think about it.
I also have bottle of Rye I got from a friend whose family has a collection of liquors left from pre-prohibition days, which were hidden in the cellar of the family business when they were outlawed. I have no idea how old it must be, but boys howdy it is some SMOOOOOOOTH drinkin' stuff!