So I just got my G403 (it came one day earlier than scheduled, well played UPS
) and my 1st impressions with the mouse are extremely positive. The weight seems about spot on (without the extra 10g that came in the box), and the size and shape is almost a perfect fit on my hand. I'm almost sure I finally found a replacement to the DeathAdder. The mouse fits my grip style and hand size so damn well... I was intantly in love with it.
There doesn't seem to be any scroll wheel rattle on mine (maybe a tiny bit, but it's hardly noticiable) and the wheel itself feel good on the finger, the steps are also good imo. The scroll click is a little bit heavy but I can manage (I hardly ever user the scroll wheel to click anyway). The sensor feel responsive and snappy and the rest of the buttons feel nice aswell.
I think I got a good copy!
The box was in good shape and it doesn't seems it had been re-sealed (looks like brand new).
I was a little on the edge about this mouse after reading a couple of complains on here but so far the 1st impressions are mostly positive. I think I found my new daily driver for gaming.
I can post some pictures (and compare it with the DA Chroma) if someone ask later on (in a couple of hours).