I recently picked up a Logitech USB 350 headset to enjoy the voice filled beta of Second Life. I had a couple of ordinary headsets, with the microphone and speaker connectors, and they had always worked well. However on one machine they were simply not loud enough. Other programs such as Skype and Yahoo messenger seemed to work well, but for Second Life, people told me I was way too low.
Apparently (so I am informed) some sound connectors are just not so hot at actually connecting, hence the lower sound volume. If anyone knows different please let me know.
The headset was the first thing in a long time which didn't have an installation CD in the box. Just plug and play. It's nice to have a fairly decent set of headphones too, to listen to music, without having to switch. I suppose it is helping pick out different voices in a crowd within the Second Life voice beta, which incidentally is extremely addictive. Voices get louder as they approach, as well as tracking to the left or right depending on where that other speaker is. So far so very groovy indeed.