I have recently upgraded from the 1000 to the 1100 in order to get rid of the dreaded double hits and runaway volume (call me crazy but I trusted that this move would fix the issue). I have had the 1100 for 2 weeks now and my wife has noticed on two occasions that the 1100 has done double hits, although for briefer periods of time than the 1000. Has anyone else noticed this? Given that I have not yet noticed this issue I am holding out hope that my wife is imagining things. Otherwise, the thing works great and is a nice upgrade with the extra customizable features.