What headset do you use?

After my post about the Library Geeks podcast I thought about it and I really should buy a headset – so I want recommendations. What ones are you using and which do you like? I’ve heard some podcast interviews where I have to fast forward through a specific speaker because they’re so darn quiet – I don’t want to be that person :)

I got one recommendation from someone at work today for the Sennheiser PC150 Noise Cancelling PC Headset – but I want to hear from more people.