If you want the best in quality, then you should look for an XLR microphone. XLR mics typically have higher sample rates and deliver crisper audio than their USB counterparts. However, XLR condenser mics require an external power source in order to be audible at all. That means they won’t work unless you have a preamp, mixer, or audio interface with a 48V power source. Where USB microphones win out is in ease-of-use—just plug them in and you’re ready to go. They draw power from your USB port to amplify their audio, so you won’t need a preamp to get them working. However, since your USB port only provides 5V of power, don’t expect the same quality or dynamic range of an XLR mic.