Best -
Langway
Hunter
Dino
All were watershed moment trades, each one made the team that much better, and added a piece ( or pieces) of something that they were sorely lacking prior to. What was given up in them, regardless of what they did after ( I'm looking squarely at the Murphy sniffers here ), is irrelevant.
Honorable mention to the Ridley/Miller and Calle ones.
The Hunter hate is befuddling, the guy was a warrior, brought it every night. Yes, he crossed the line, but he was weaned on the NHL in a different era and time. As time has passed since then, combined with sweeping changes to the rules, penalties, and officiating of the game as it currently stands.....he seems to have become even more villainous. In the eyes of some at least.