Summary: Bought this to replace the old one that was wearing out after 5 years. This is a very well built mouse. My husband is an avid computer gamer. Using this mouse for hours a day 7 days a week. It has stood up to grime, and food build up from sticky fingers, and multiple coffee spills. The shape of the mouse fits the hand beautifully. If you are in the market for a new gaming mouse I would highly suggest this one.
Summary: I'd previously had a logitech gaming mouse, then an HP gaming mouse, and neither of those even came close to this mouse. Not only does it look incredibly attractive on your desk with an infinite number of colors you can set the two lights on it too, but since it is build for right or left hand so it has more buttons than your typical gaming mouse. There's 6 extra buttons on the mouse when compared to your standard pack-in mouse, which is quite nice.
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.
Summary: I've had this mouse for several months now. I bought it because it does feel nice in the hand, and the customizable color pairs nicely with my Logitech G510 Keyboard. BUT it has problems. It collects dust around the sensor quite easily, so the cursor will start to jump around until you wipe it off. So if you're trying to game with this mouse, make sure to clean it before loading up your game. Also, I've fallen victim to the poor drivers.
Summary: I purchased this because the middle mouse button on my previous mouse caved in. This mouse offers 5600 DPI, which means that moving my mouse 1 CM results in the cursor moving from one side of the screen to the other. Awesome. You can program Macros, and so lots of other stuff with the drivers that operate the mouse. When I saw that it has custom LEDs I almost had a nerdgasm. I will always buy Razer.
Summary: I been a Mechanical Engineer for 20 years. Most of that time I have worked on PC's with a mouse. Have found the Razor gaming mice are great for working with a CAD systems like Pro/E and UG NX. Now using my left hand with the mouse. Right arm has too much muscle damage from cheap office mice. Took the hard core gamers to create a market for a better mouse.