i use a bluetooth razor basilisk x hyperspeed and have not had any issues with it dropping connection in any task.
the stupid power saving feature will turn it off after a minute or so of sitting idle which takes a second to restart when i want to move it again. that is REALLY annoying having to wait on it before starting a new task. but that is only after sitting idle for a while. when playing a game, it does not happen as it never sits idle for any length of time
quick response time and so on does not make me miss the wired mouse at all