If you are into WoW (or similar), this mouse works really well as a cheaper replacement for a Razer Naga...and you even get a couple of extra buttons to spare. However this is also its downfall to some extent - its learning curve is a bit higher, and unless you use it a lot you tend to loose horizontal tactile tracking of which button your thumb is resting on, on the side panel rather easily.

Having said that, since all the buttons are programable, you can easily mimic the Naga functionality by combining the middle row in pairs - so you only ever have to worry about getting the top, middle and bottom right. The keys are beveled inwards in two sets which makes vertical tactile tracking very easy and accurate, so that is not a problem at all.

So with a little bit of work, this mouse can save you a lot of money if you need the side panel for MMO functionality. You can also backup your profiles and save them in your GoogleDrive/DropBox/OneDrive incase you ever need to reload your PC - unfortunately it doesn't support automatic cloud sync for your settings like the Razer drivers does, but since the price is so much cheaper, it's a pretty fair tradeoff that you can't expect something like that to be included with their hardware (...at time of writing).