I've had this mic for a while now, I use it in conjunction with my Grado SR80i headphones, I got the little usb sound card from them which was a steal. First, it's the best mic I've listened too, I've worked in call centers for many years and this has the best clarity I've ever used for voice communications. I've had some very expensive headsets over the years, either purchased by me or provided by my employer but for $50 you just can't beat it. I've tried some of the sub $100 gaming headsets and they're laughable. If you have a good set of headphones... you might as well match them to a good mic and call it a day, the Antlion is awesome. The only complaint I might have is the mute switch is a little stiff but it works just fine. Anyhow, I wanted to keep this short and sweet, so there you go.
If you're looking for a mic that's going to perform well above it's price point... the modmic 4.0 is the way to go.