wireless headphones

Has anyone tired wireless headphones with good results? I am wondering about RFI and or other types of interference becuase of the nature of the beast.

Any recomendations would be appreciated.
I tired the Sennheiser wireless headphones and I wouldn't recommend it for anything other than lying in bed and listening to TV. There was always very audible background noise and even slight movement caused the signal to change. Under the best of circumstances the quality was never too much better than a cordless phone. There may be better solutions but my one experience led me to sell the headphones.