The Shure SM58 is one of the most-used microphones in the world. The SM58 can be found from almost every quality recording studio to President Clinton's podium. The mid-range presence is legendary in the music business, and it takes an amazing amount of abuse, making it ideal for touring. The SM58 is specifically designed for vocal use, and the midrange is boosted. The frequency response is 50Hz to 15KHz range, which is perfect for vocals. The mike uses a cardioid design to eliminate stray noises from the background. I've used them for years, and I still have ones I bought when I was in a band in high school. You can pick them up on eBay or literally any quality music store.