What classic cocktail would you recommend as a nice "go-to" drink to order at a bar? Something simple besides neat or Whatever & Cola that any bartender should be able to do well. I am open-minded but would like to skip the trends such as 'tinis, margaritas, and daiquiris. My tastes run to whiskeys and, on the sweeter side, gold or dark rum. Your help is appreciated. Thanks in advance!