I don't see why you are afraid of an RF based headset. You're not afraid of your wireless router too are you?
You are aware that RF waves are a form of non-ionizing radiation that is harmless to the human body, right? Even if you don't believe that, products have to pass certain regulations set in place to ensure they are safe for use.
Anywho, I just bought a Logitech G930 wireless headset and it works great! It's about $150 if found on sale. It's really comfortable, sounds great, has simulated Dolby 7.1 mode which is great for games that support it, macro'able buttons on the one side. All around great headset and I'm quite happy with it.