Well, I have been toying around with recording on my computer for a few months now. I have decided that I want to get a condenser mic with a preamp and use that for the vocals. I have been recording my guitar through an adapter that goes into the mic input. My main question is, Will the quality of all my recording be much better if I go through a USB device? Also, is there any good condensor mics and preamps that are fairly cheap?