Any delay, if even noticable, is by design as the laser must shut off to prevent the
idiot from looking into it an possibly hurting their eye when lifted. This is and will be a requirment
on all laser mice. They will not RMA something that isn't broken.
Granted I have heard of some that the delay is greater then on others, but as long as you don't lift
the mouse off a surface during heavy action then you will never even have the possibility of any delay.
I have experienced reciever problems with this mouse, but I also had some with my previous 2 wireless mice as well. It's an issue with interference and not just a MX1000 issue. I simply moved my reciever to a slightly different location and all is well again.
Having said that I game often with it an it's by far the best and most accurate mouse I have ever owned.
I do not notice any delay in even the most intense games.
Those with long fingers should test the feel before buying. I have shorter fingers and it works well for me,
but the shape could be an issue for larger hands.
Any So called issues with this mice are blown way out of proportion by people who do not know the real deal.
If you are worried by the possibility of a delay then don't ever get a laser mouse or even a wireless mouse as both technologies have their inherent quirks.
Mark