For those of you who have never read this or for those who haven't in a while, go to amazon right now and buy this edition/translation! I can vouch for Collins and Stauffer being good people and good scholars--an unusual mix!
Plato’s Menexenus and Pericles’ Funeral Oration, Empire and the Ends of Politics
trans., intro., and notes Susan Collins and Devin Stauffer
(Newburyport, MA: Focus Publishing, 1999)