Well, what can we say to sum up the G9? It's currently one of the highest DPI mice you can buy, at least until Razer brings out the Lachesis which offers an insane 4000 DPI. The interchangeable grips are a great idea and it's quite odd that no-one has come up with this before as it allows the mouse to function quite differently which makes it more suitable as an all-round mouse.
The new scroll wheel is good, but not as good as the one on the MX and VX Revolution, as we found it to be a little bit too small for our liking, as even though it's wider than the wheel on the G5, it sits lower in the mouse. It's also stiffer to click, but we like the ribbed surface.
It's suitable for just about any kind of game play and you don't need any special kind of surface to make the most out of it. The ability to store different profiles in the G9 is also great and it makes it a great choice for those that bring their own mouse to internet cafes for a spot of gaming.
There's really not much bad we can say about the G9, we just hope that Logitech will release more grips for and that they keep develop and support the new software for it. However, there is one downside and that's the price, as at US$99.99 this is a very expensive mouse and no-one can argue with that.
This doesn't mean that it's bad value for money, as it's a first rate product, but with the second generation G5 at $69.99, it seems a tad much.
In the end we can't do much else than recommend the G9, as it's yet another excellent product from Logitech, but it will be up against some stiff competition once Razer, Microsoft and SteelSeries launch their new gaming mice.