Julius Caesar Play Script

Question: What's the best book copy of the play "Julius Caesar"?
I was just called to be cast in a local production of Julius Caesar, which will be cast next month. I'd like to go and buy a script, but, well, I'd like to get my hands on whatever "best" copy I can. That means a script that is small enough that it could fit into my coat pocket (so I can carry it where'er I go, pretty much), but that may also include a 'notes' section for any tips or historical notes that might be helpful for the play.
Lastly, something I can pick up for a reasonable price. Online if needed, and yes, ebay/half.com are legitimate.Any recommendations?
....bonus points for a pretty cover! Haha.
Answer: The best scholarly editions of individual Shakespeare plays are the Arden ones. They'd have the best notes, but many of them involve disputes over textual accuracy rather than literary interpretation. Still, they are heavenly for the Shakespeare lover. They are, though, too large for your purposes.
For good solid texts with good notes and prefaces or afterwords, the Signet Classics editions are fine. However, some would find fault with the paper for an actor. But I suggest you use the Signets as your guide and pick out something that has better quality paper and larger margins with equally good (if not better) critical apparatus outside the text of the play (e.g., a preface or whatnot).
Good luck!
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Julius Caesar (Act V, Scene III)