To be fully honest it is the best mouse I have ever had. Iv'e never really had a problem with it apart from not long ago, when the mouse was fully charged it would discharge in a couple of days but for some reason I left it on charge while I went away for the week and when I came back it was back to normal.
I would definately recommend this mouse to you as it is well built and extremely accurate especially for gaming. Although I would recommend that you use the PS2 port instead of the USB one as I noticed a considerable difference in speed and the mouse tended to lag a bit even with the battery full. That must be what you have heard of, they were probaly just using the USB ports.
Hope this helps and if you need anymore info then just let me know.