Then use it wired..
Sorry, but it is a practical impossibility to remove the
lag(no, not response) time of a wireless mouse. There is always a intermedium between the wireless mouse and the computer, the wireless receiver. this has to decode the wireless signal and send it down a cable, the laws of physics and common sense dictate this cannot be done instantly, it has to take time, a time that is much longer than it travelling straight down a wire.
The question is, will you notice it ? No, probably not, unless you pay very close attention. But it is there.
The Mamba whilst wired though, great mouse
edit:
Okay, so i read Razer speech on the Mamba. Interesting, okay, so they may have cut down the lag to 15ms, maybe 10ms, they are lieing saying they have got it down the 1ms. To reduce the lag time of high end wireless mouse 30times over ? not happening.
LOL, i love how they claim there interference free 2.4ghz technology is amazing, com'on... it's commonly known that RC radio transmitters and MS Xbox 360 controllers achieve no interference by constantly alternating frequency within the 2.4ghz band to never conflict with other such devices.
Touché.