I have to put another vote for ESB.
In ESB Fett was cool. He stood up to Vader, followed the falcon, captured Han, and got away with the bounty scott free. In the SE he stood around. In ROTJ he...well we all know what happened. I did two ROTJ costumes and I love the paint but this time I had to go back to the heady days when no one knew who he was, or where he came from. All we knew was that he was a ******!!
ESB all the way!!