I need a good microphone to do voiceover work for but am wondering about compatibility. My 2011 Macbook Pro seems to only have an audio out port, so the microphone would need to be USB, correct? Will any advertised "USB Microphone" work with OSX? I'm trying to find one in the $50-100 range and as I understand a condenser microphone would be best. Does anyone have any suggestions for specific microphones or just general recommendations?