Pros: Excellent Materials, including the matte black finish, plastics, wheel, buttons. Its just right, not to grippy or sticky, doesn't get slick or swampy with sweat. Cleans easily.

Good Positive Click from buttons, Wheel is a little stiff but its new, being nice and large makes it OK especially with the rubber insert.

Very accurate tracking, adjustable both on the mouse and customizable via the app. Works great on my Staples (belkin 5yrs ago) satin cloth pad. Just the right amount of drag.

Full color gamut for all the led back-lighting can be set via the Corsair app.

Price was excellent for what I got considering the competition, as I came from Logitech MX518 I think. This one seems a little better made and I paid the same way back when it came out.

Cons: The Right Button is about a half inch too short for my middle finger. I think it was form over function in this case. My finger just hangs over the end, although it does not seem to be a problem to click, it can be a little uncomfortable if you are resting your finger over the edge for awhile. BTW I don't have huge hands, I'm like a med/lg winter glove size.

Other Thoughts: Regardless of a minor gripe about the shape, Well Worth the price.
No intrusive software like Razer or their inflated prices, Logitech may be an alternative.
NewEgg had the best price by almost $40 at the time I purchased

Pros: Very smooth and very customization with the programmable software made by corsair
Not outrageously expensive
Great quality, dosn't feel cheap at all

Cons: If your computer is asleep or turning on the mouse sets to the default colors and dpi, not that big of a deal though because it goes back to your set dpi and colors as soon as you load to desktop.

Other Thoughts: I have a razer deathadder chroma on my other setup and personally like them the same and i love my deathadder

Pros: Smooth movement / clicks
RGB LED lighting is nice and bright (3 zones)
DPI + /- buttons - You can set 5 different DPI zones. This feature I dont think is covered enough. You have full control on each zone, setting the exact DPI you want. Then it can be matched with the RGB LED indicator so you know exactly which setting you are one. Excellent feature for gaming.

Cons: My only con is when you turn the system off, if you touch the mouse the LED's will come back on, in the stock color config. 1) Don't really want any LED's to be on when the system is off. 2) If they are, at least display the color profile.

Other Thoughts: Overall a great mouse. I do wish they would bring back smooth scroll wheels (ones that dont click). I dont scroll when playing games and when browsing the web I find it easier to fling the wheel then stop when needed.