The design is nice and the tracking is accurate with Blu-Track but the scroll-wheel feels very slow. It seems like it has a metal wheel but it's only the outside of the wheel. The actual mechanism is still plastic and there is too much resistance on it. Prolonged scrolling is not comfortable at all.
Also, the USB dongle is very big and to turn the mouse off, you have to unplug it and push the dongle onto the bottom of the mouse. The dongle doesn't even fit onto the bottom of the mouse so half of it sits out from the base of the mouse.
It does have the cool blue halo light on it but that only turns on when you switch the mouse on and then it turns off after a few seconds.
If you want this tech and this amount of buttons, go for the Wireless Mouse 6000 instead. I bought both and it is far superior. It has a mini dongle that slots very comfortably in the bottom, it has a power switch and the scroll wheel is much better.