So I've been going off and on about what audio interface I want to get. It's still sorta between the Presonus Firebox and M-Audio Mbox.... I'm on a toit budget, and I'm wondering what mics I should get. I want at least two mics. But what can be used for what? I'm thinking the classic SM57 and... What? I don't really understand what kind of mics are used for what. Obviously, they different frequency responses and ranges and all sound different and give you different sounds. I want two mics that can do guitar,bass,drums, and vocals. I know its do-able, I've been through worse. Any help is appreciated. Thanks!