I never had the old the model, I think it performs the same as the topgun2. When playing the hotd games it seems pretty responsive the button trigger would be better with a micro switch though.
I attach a program called "MOUSERATECHECKER" It is to measure the response of mice, very useful for gamers.
just download it, unzip it, (it is so simple that doesn‘ t need install), and when the program runs, it will ask you to move your mouse pointer over its window, so it will rate its refresh. it is very useful to rate mice for gamers....
just do it with your topgun 3 and please, post results.
I remember a few years ago Topgun1 gave me an average between 55 and 60, same than a guncon, RF topgun gave 40 (because cheap wireless), and wiimote gave 500 (because 1Mp cam gives smooth, but lag of wiimote is still like ALL lightguns..... 15 or 20 ms to react.
Please
tell results of your topgun3 here, an average of 50 or 60 will be Superb
-Best Regards