Out of the box, I did try the insanity of trying to control the 8200 DPI offered in the Havoc, but I found myself overshooting what I needed, and just the jiggle of the hand trying to double click to open an application was near impossible. That isn't to say there aren't people out there who cannot control this sort of DPI setting; it just says that I am one who cannot. Once I lowered the DPI to under the 5200 DPI level, I found it much more enjoyable to use personally. I do like that the scale goes full range and allows you to drop all the way down to 100 DPI for those where the most finite movements are very important to the project you are working on.
The rubberized coating works very well where it is applied, and the extra grip under the thumb is handy in helping the grip. The LEDs are bright, and they are done well where there is limited bleeding, and you only see what Cooler Master designed you to see in the dark. Just overall it fit my hand very well with my relaxed grip, but will also perform for claw grip users, and lastly, I just really like the aesthetics of the whole Havoc design once it is illuminated and in use.
There were very few things that I can find fault with concerning the Havoc. I guess one could complain that there aren't adjustable weights, but even here I found the mouse to be a bit on the heavy side, but the large feet on the bottom takes away a ton of friction making it easy to swing around. I found the shiny plastic on the right to look very nice, but even with a clean and dry hand, the right side of the mouse will allow your fingers to slide a fair bit, before you can actually lift the Havoc. This may not get you killed, but when things heat up, it only gets worse. I found myself really compensating with my thumb a lot just to get the mouse to lift without the cursor wandering too. I guess you could say that you could raise the DPI and not need to lift, but again, that doesn't work for me personally. The last thing I found issue with is the software. Not anything to do with how to set things or the various tabs in the software, but when I load the software in Windows, it shows the application and you change settings or close the window. With the software running on the toolbar at the bottom, I had issue with the 'configure mouse" option even opening the software. I had to close it and restart things when I wanted to change settings.
Relatively speaking, for a mouse offering an Avago ADNS 9800 sensor, onboard memory, Macro control, keyboard control, optional colored LEDs with a dimmer and effects, profiles, simple to use software (when you can get it open), all in a mouse that looks great and it also feels great in your hand, and add in the fact that you get all of this for right around $55 US dollars, there is a bargain in mouse technology to be had here. Even with my personal issues, I still think the Havoc is reasonably priced, and offers the most software control of the sensor as any $100 offering out there, of course lending to its professional gaming moniker.
If you don't tend to lift your mouse, and don't need to be in the software panel all the time, I strongly urge you to get to the store and try one out. If you do game a lot, where grip and the ability to lift are important, I would maybe look elsewhere. If this mouse were released with a full rubberized finish, even with the small glitch in software that can easily be remedied, I would have been fully supporting this and giving it an Editor's Choice award. But as it sits currently, it is the features and the pricing that sticks out amongst the awards for something so close to being perfect.