I got a Logitech MX518. Too me, any mouse >= $50 is plenty good. I can't use much more precision than what they provide. Hell, I don't come anywhere close to the highest sensitivity settings in any game. What I love about this particular mouse is the buttons in line with the scroll wheel that let you adjust sensitivity on the fly. It's useful when you have a massive screen (1920x1200) that can take forever to move through, but also need to tone down the sensitivity sometimes (e.g. Paint). Plus, it's awesome for games where you need different levels of sensitivity (e.g. sniping vs. spraying in a FPS).
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Or should I say; good for us! It gets top marks allround for me, I spend countless hours on the PC every single day and the mouse is incredibly comfortable in games and desktop use alike, it costs quite a bit but my last mouse was a cordless Logitech with a charging station and that cost a lot more and was largely useless for games and the batteries were fried and barely lasted one day after a couple of years so I'd say the Kone is well worth its price! 