Classy

To express contempt with style, etiquette, and propriety:

• Well I never!
• Goodness gracious me!
• Indeed!
• How crude!
• Hello! What's this?! / What's all this then?
• I say!

To express satisfaction with style, etiquette, and propriety:

• Jolly good!
• Capital!
• Good show lads!
• Indeed! (It has a double meaning. The key is tone.)
  
• Quite! Quite!
• Smashing!

Top hat! Monocle!