I highly highly highly recommend the g9, it's wired and absolutely amazing. It's smooth and has easy access to changing your sensitivity in game by a simple click. It's a beautiful mouse lolol
yeah, G5's, G7's and the Lachesis have the ability to adjust sensitivity aswell
the G5 and G7 are both 2000DPI max, the G9 is 3200DPI max, and the Lachesis is 4000DPI max
I think all of those mice are very smooth and accurate (I do own one of each, except the G9)
If I had to use one mouse, I'd probably pick the Lachesis. It is more expensive than the G5 and G7 though, which are still quite good mice.
Though if you really wanted to go wireless, then you couldn't go wrong with the G7.
The only other wireless mouse I'd maybe consider is the MX1000, but that's been succeeded by the G7. It doesn't have a second battery like the G7 does, and is heavier (which could be good or bad, though I prefer a lighter mouse)