Nice topic!
For me it depends upon the weather/mood I'm in.
In general, I really enjoy a fine tequila side by side with a fresh glass of sangrita.
Or a fine Whiskey with soda water...
When things are hot, I sip on an ice-cold Michelada, which is kind of a Mexican variation of the Bloody Mary.
salt the rim of a 20oz glass with course salt
fill glass with ice and juice from 2 key limes
2 dashes of Maggi Seasoning
2 dashes of Worcestershire sauce
2 dashes of Tabasco
dash of pepper
fill half the glass with Clamato juice
fill the rest with beer (pour slowly, the salt makes the beer foam)
Note, this is how I make it - and this is the best way to make one.
There are many variations. You can use Tomato juice or V8 instead of Clamato (but you're cheating yourself of the slight briny salty flavor that is ohh so important in a Michelada). Instead of Maggi seasoning, you can add 1 dash of Soy Sauce. Instead of Tabasco, you can use whatever Salsita you want. You can also add a shot of Tequila to the recipe, but use a Tequila Blanco and not a gold-colored tequila so as to not overpower the delicate flavors.