In my opinion, a glass of good rum is fantastic. You don't even need to chill it, just drink it neat. The Captain Morgan spiced rum is good value, as is Bacardi Especial, and Bacardi Reserva. Good flavors on all of those. If you're willing to spend a little more, you can get a more sophisticated taste with an Anejo aged rum, but in my experience they're not usually worth the price, unless you're entertaining and want to look fancy by having a fancy bottle with a fancy name.
Gin would come in second place for me, then tequila. Fruity shit after that, then vodka and whiskey in next-to-last and last places, respectively.
Edit to add that I prefer a good beer over any kind of hard liquor.