I am choosing a wireless headset for my PC (I hate cables) and am looking at Sennheiser RS 170 / 180. They supposedly sound great, however, there is a 25ms audio latency. I've heard that this is OK when watching TV or listening musing but is bad for games.
The question is - has there been any research / hard data that would show how much of a delay is noticeable by human brain? 25ms doesn't sound like a lot but I may be wrong.