Believe what you will even though there is plenty of measurable data that proves we all experience input lag from something be it mouse, monitor, video card, timings, etc. It may not be noticeable but it is there. I was merely answering to what you were confused about in his post. I do not own the mouse and cannot comment on the issue directly. If you can't tell a difference between the three then pick the one you like best. It is best to concentrate on gameplay and stick with what works for you and feels the best.