Pros: Excellent software (contrary to what most believe) and great customization, very comfortable, works with both palm grip and claw grip
Cons: Not the best build quality, but not the worst either
Be warned. this mouse is very picky when it comes to mouse pads. It never worked for me with cheap, softer/more smooth mouse pads, but works fine with more rough ones. As expected, it works great with Cooler Master's Speed-RX mouse pad as well.
It looks great, and thankfully has textured buttons so it doesn't collect gunk as easily. However the body material is a shiny plastic, that does collect gunk easily. Wipe it down every now and then. Pretty much everything can be tweaked - you can create new profiles, assign X and Y DPI settings to various profiles, adjust mouse acceleration, and you get many different LED colors in two different places.
I can't complain about the software. Functionality is fine and the layout is perfect. I think most people are just overwhelmed by the concept of options, this is an apparent plague among many people these days. But the Inferno does work as a plug-and-play mouse, without the need to install software, and you still get 5 DPI profiles.
If you have average sized, or smaller hands, you'll find this to be a great palm-grip mouse. Those with larger hands should find it to be a great claw-grip mouse; this is one of very few mice that can do both comfortably.
Great mouse, though not quite as good in build quality compared to the CM Storm Recon, Storm Spawn, or Sentinel II, but it's sensor is better than the Recon/Spawn, and it costs much less than the Sentinel II. So it's a compromise.