Logitech's Premium USB Headset for Mac is a great all-around performer for affordable but quality online chat, Apple Dictation and OSX speech recognition services, and audio and music enjoyment. For around $35-40 this headset with mic offers:

• High-performance earpiece drivers and built-in EQ
• Simple USB connection with rich digital stereo sound
• Rotating microphone boom flips up and away when not needed
• Background noise reduction mic for clear speech recognition
• On-ear volume and mute controls, Mute LED on cable
• Comfortable, soft, leatherette padded ear pieces and headband

Koss Multimedia USB Headset w/Mic - Gamers and music loving rockers might prefer this USB headset from Koss which offers many of the audio characteristics of their classic stereo headphone line. It also offers a longer, 8 foot USB cord for those who like to roam around their desk a bit.

For more Apple compatible USB headsets with built-in mic for online chat, VOIP, Mac Skype and Apple Dictation and Speech Recognition services check out this page at www.mac-microphones.com