Is your recording area loud (computer, other people, road, etc.)? Because a standalone mic will pick up a lot more than a headset would. I would get the blue snowball if you can keep it away from the computer and other loud things and try and keep it off your desk (the vibration from the fans in your computer will pick up on the recording). Also if you are going to be recording instruments besides a guitar then I would get a mic that is made for recording instruments. Also something to keep in mind is that if you have sound proof headphones you won't be able to hear yourself talk which can make it feel weird when you talk.