I don't usually write reviews, but I felt compelled for this product. This mouse is legit. I would recommend this mouse to anyone who plays games that allow hotkeys in any form.Durability:I bought one in February 2013, and I have used it heavily for two years. I'm talking lots of clicks, lots of macro button usage, and on top of that, lots of packing it up (winding up the cord, throwing it in my bag) and unpacking it, and it performed quite well the entire time. The cord didn't fray, the connections didn't get loose, etc. I knew the day would come when it would wear out, because of how heavily I use it (mainly me packing it up and moving it constantly - I'm talking almost daily), but it took two whole years for that to happen! Just a few days ago, my left mouse button started doing this weird double-click thing, where I click once but it registers two clicks (occasionally), so I bought a new one. I love this mouse so much, and it has served me well despite how I treated it, so I just had to have another.Functionality (maybe the most important part):I love the layout of the thumb buttons. There is so much flexibility. I used this mouse to play MMOs where you constantly have to switch between skills. It's so much nicer having all the skills on the thumb button, leaving your left had free for WASD movement (this is especially great for ARPGs where you have to skillshot stuff - less important for MMOs like WoW where you just click your target, then dump your skills on it). The firmware that comes with the mouse is easy to use, and I like the fact that there are multiple profiles that you can keep for multiple games / multiple functions within one game. Also, I was surprised at how often I used the 3rd mouse button. It's great for commonly used skills/functions. Last but not least - I like how the thumb buttons are contoured so you can easily feel which button you have your thumb on. You can tell the difference between the buttons.Aesthetic:This mouse just looks cool. I got the white one, and on top of the white body with black accents looking slick (I constantly get comments about my cool mouse), the thumb buttons have different colored LEDs that you can program to backlight different profile selections i.e. you can have your WoW setup show green lights, your Herocraft setup show rainbow lights (it fades from one color to the other), and your work setting (yes, I use this mouse at work, too!) use white lights.Value:You aren't going to find a mouse this awesome for a lower price. In fact, you might not even find a mouse this awesome at a higher price!