Okay, so I don't care about the audio quality on either headsets. At all. I want the most convenient headset I can get for my sister, because she is the laziest girl on earth. I went on Skype with her yesterday with my new Barracuda headset and kept complaining about the static her built in mic was emitting, so she's going to buy a new headset. (She's in college so I rarely get to see her in person. ) Rules: -Nothing flashy. -Nothing too expensive. -Relatively durable. -Noise canceling microphone. -Comfortable & NOT too bulky. So I've narrowed it down to the Logitech ClearChat Pro USB Headset and the Sennheiser PC151. What are the disadvantages and advantages of USB? I know that with analog it's plug and play, plug it in and you're done.