I have good 5.5 years the Sennheiser RS 4200, this model provides even today his ministry, however, always susceptible to interference. So replacement was needed, but far less expensive. Disadvantage: infrared, I go out of the room is not so funny, no reception, otherwise wonderful wearing qualities, no pressure on the ears. The sound quality (language) is no different than with Sennheiser RS 4200, ie well understood. While I had to shell out 150 euros for the Sennheiser, the acquired here, with 55 euros and great wearability a real asset. One more thing, the equipment with "AAA" batteries are an advantageous alternative, which in any case suggests at Sennheiser to 30 euros per battery impact.
