I would gladly see the same setlist twice. BUT, I wouldn't pay the full ticket price for seeing the same set twice. So if money is a factor in the decision, then I'd only see them twice if the setlist is at least 50% different.
But if I saw them, and then someone said, "Hey, you wanna go see them again?" Hell yes.
Another exception I would make is if they were doing something special. If I had the money, I would've totally went to the Boston show, after seeing them in my city, but again, money was the big factor.