Summary: I have always been a fan of Razer products and thought this would be a nice replacement for my Copperhead that I wore out. When the product arrived, I heard a slight rattle coming from inside of the mouse. Upon opening the case I discovered a single loose screw. I found no apparent location for this screw and simply replaced the cover and gave it a try. It worked well for about a year, then it noticed that I was unable to drag and drop items anymore.
Summary: The scroll wheel moved out of place 2 weeks after purchase. It was not turning correctly, like it had come off it's track. It took 6 weeks to get an RMA for an exchange, I did not feel like waiting a total of 2 months to replace it, so I purchased from a competitor. If the mouse wasn't broken, or customer service wasn't a crawl I would have rated this mouse much higher.
Summary: When the mouse works, it works well. However it seemed like the mouse would go crazy and stop working right in the heat of gaming. Because of this, I returned it. I wouldn't recommend buying this unless you have incredible amounts of patience.
Summary: Updated 01/18/2013: 3.03 drivers (new Windows 8 drivers) crash in the middle of play just like 3.01. This mouse operates more smoothly with the 3.0 drivers. However the mouse just dies in the middle of operations and games. So far it has died in the middle of Total War: Shogun 2, Mass Effect 2 and 3, and Star Wars the Old Republic. When I say die, I should say suddenly die in the middle of combat or a crucial operation.
Excerpt: This mouse is wonderful I'm sure for gaming, but its also truly fantastic for UI programming. I function with a number of application that demand a lot of mouse control for very exact UI style. Its nice to have a mouse that is really sensitive down to the pixel level when drawing a UI element. ş When switching between profiles in Win 7 the mouse becomes unresponsive. If you by no means do this, obviously this doesn't apply to you.
Summary: When this mouse works, it is amazing...however mine has had alot of problems with it freezing and becoming unresponsive. To solve this problem I have to unplug it and then plug it back into its USB connector. Pretty annoying.
Excerpt: Excellent design, very good color scheme, related to my old Diamondback Plasma shape/feel, high DPI. OK, let me preface this with: I owned and LOVED the Diamondback plasma LE for 5+ years prior to a dying right button forced me to "upgrade." This mouse is such an extraordinary letdown, selecting it up and setting it back down (which I do continually when gaming) will move the pointer continuously down and right, which is very annoying in particular in FPS games.
Excerpt: Storing profiles onboard in the mouse is good.The capability to turn on/off the LED's in the mouse is interesting. I encountered continual occurences of the mouse locking up and not moving for a second or two. Beneath regular use (browsing the internet, word processing, etc), this is nearly unnoticeable. But when gaming, it spells the distinction between winning and losing.
Summary: Mouse has good precision but bad ergonomics - great precision - great looks especially multi color LCD's - Extremly poor ergonomics I rate this a 5 on all aspects except the ergonomics. You simply cant find a good way to hold this mouse. Sides are too small and you keep hitting the buttons by the thumb. The mouse buttons grooved and slippery due to the coating used. There is also no weight changing system as what you would expect in a mouse of this caliber.