One comfortable headset works several ways: At home or in the office, the GN Netcom GN 6210 ($150 street) works with standard telephones; on the road, it's a headset for any Bluetooth cell phone. (If your cell isn't Bluetooth, you can add a Bluetooth adapter for $50 street.) And in a hotel room, it can be a headset for any Bluetooth notebook for VoIP calls. The only thing it lacks is wind noise cancellation.