The Black gaming mouse is comfortable to hold and easy to use in extended sessions, since the soft rubber coat helps combat sweat. The scroll wheel really stood out to me as easy to access and use. The design is a good fit for all grip styles, but to me favors the claw-grip since it typically places the hand further north on the mouse, and I had a few areas (such as the thumb grip) that seemed almost out of reach.
Weight is somewhat of a touchy subject, to some it's a nice feature and to others it makes no sense. When I first opened the Black gaming mouse, I thought that perhaps our sample was missing the weights, because it was incredibly light. Even with all the weights installed, totaling 22.5g extra, the mouse feels lighter than usual.
The Teflon feet and Philips laser eye allow for a large range of surface types, though the eye does suffer from the tracking problem we often see with the Z-axis. When the mouse is lifted and returned, even slightly, the cursor jumps to the south-east of the screen. While this may not affect everyone, there is a large group who play using quick lifting motions in-game, and you'll constantly find yourself fighting the cursor back to the center of the screen. If your gaming style favors keeping the mouse grounded, you'll likely have nothing to worry about.