Must have GameMastery Maps

[AlanM]

So, what are people's opinion on what GameMastery Maps are the most vital, in that they see the most use from them?
I am curious to see if there are any big ones to make sure I get. I do already have one of each of the following: the blank/basic one, the forest one, and the desert one.

Also, I suppose this question also extends out to any other gaming props/supplies that are absolutely essential, or really useful to have.

[AlanM]

Four days and no response? Awwww...

[TheLoneCleric]

City maps are a must for my games. That said, the Opera house, the Arena, and the tavern are all good picks. Again its seriously a case of YMMV.