I have it, and highly recommend it if you use the "claw" grip. It has great button placement (right handed, of course) and the "Precision Grip," while atrocious in looks, is comfortable if you can find where your hand fits into the grooves.
I do stress the importance of "claw" grip however, because if you like placing your entire hand on the mouse this will probably not be for you (claw grip is where you use just your fingers to move the mouse). The way both the grips are made for this mouse are geared toward the claw.
I'd actually say get the G9x, it looks like the same mouse with better internals, and you can probably find it on e-bay for a good price. I've been wanting to upgrade to it, but since I already have 2 mice (a G9 and a Razer Lachesis [which by the way is awful, don't buy it]) I can't justify spending another 80 bucks on a new mouse.