Blue Microphones has a been making superb mics since 1995. Many professional recording artists and studios use Blue Mic exclusively. Blue also has a great line of USB mics that have become the gold standard for podcasting. Blue offers three different USB mics in their line up: Yeti, Snowball, and Snowflake.
Some basic mic terminology is needed to help understand the differences in micrphones. Cardioid mics pick up sounds coming from in front or from the sides of the mic. A cardioid mic doesn't pick up sound coming from the back of the mic. Omnidirectional mics on the other hand pick up sounds equally from all directions. Bidirectional mics pick up sounds from the front and back of the mic and ignore sounds coming from the sides.
The Blue Yeti (shown on the right) provides the highest level of recording flexibility. The Yeti is THX certified and provides a level of clarity previously unheard of in USB mics. You can record using cardioid, omnidirectional, and bidirectional patterns. What this means is the Yeti can record an individual, a group of people, or a traditional interview setting with an interviewer and an interviewee. This types of situations used to take multiple mics to get good sound quality. The Yeti will cost about $150. This is a great mic for leaving at your office or home and using in a set place where you won't need to transport it much.

