Share 'Looking for a USB mic'

yea pretty straightforward question here. I am looking for a quality USB mic if such a thing exsists. I use my PC ( audacity,cakewalk) for recording my progress and making backing tracks for myself so studio quality isnt quite what i am looking for , but i would like something a little nicer sounding than my 7 dollar desktop mic. THanks in advance. and if you have another cost effective way of...