True, I agree with you, that's why I stated that other people complained of a a slight lag. But I gave my experiece with the unit itself. I am sure other will chime in, and give their experiences as well. I know of a few other people who use this unit, and they have no problems with it.
I think RF reception has a lot to do with what issues arise with this keyboard set. This set comes with the RF dongle, along with a wired extension base. I say use the base, and place it where there are no obstructions to interfere with the RF signal.