you can get a lot with 5-800 in the used market. i highly suggest buying used mics that retain their value- that means stick close to the AT's, AKG's, Neumann 184s might be just a bit high on your range, but a great mic nonetheless, there's a ton out there. what I might suggest doing is perusing the for sale section and then asking about individual mic sets you come across. I know there are a pair of SC-T's in there that are at the bottom end of your price range, letting you save some money and possibly put it into other gear like stand, tbar, batteries for your lappy, shockmounts, etc.