Conclusion: Using most mice only takes a day or two to become used to them, but with something like the Corsair M90, it took me at least two weeks, probably more. Even now it’s still a bit of a handful to use. The reason for this comes down to the button arrangement on the thumb. Learning to use new macros always takes time, but the main issue I had was trying to correlate which button did what, or which number I had associated with it, so switching characters in an MMO would throw...
Pros: Well built mouse, excellent ergonomic shape, high end materials. Macro buttons are placed in excellent positions, far better than the placement of buttons on the Razer Naga mouse. Looks great.
Cons: Software is full of bugs, macros do not work properly in release version or beta version 2.12 You cannot program mouse to mimic a keyboard button being held down (like you would if you programmed a "speak" button for vent, etc)
Cons: Software really sucks Slow tech support Side buttons basically no use for most popular MMO games(wow,swtor as I know) Again the driver of the mice is terrible, unstable, full of bugs, bricks ur mice somehow Have more cons but has character limit
Pros: Many buttons. Middle mousebutton comfortable. AVAGO 9500 laser.
Cons: Sidebuttons uncomfortable, both position and pressing. Sidebuttons do not work with games. Sidebuttons can not be macro'd to hold down. Most buttons out of reach or clustered, useless for gaming. Loads more but 250 char limit.
Summary: I got one of these at the time the M95 was replacing it, and Corsair offered a MIR on top of the already discounted price. The software does take some getting used to, but it's pretty straightforward once you get used to it. No complaints on that end. The thumb buttons may feel a bit stiff initially, but again, you get used to how much pressure you need to actually press them and it becomes muscle memory.
Summary: Points on mouse -Heavy -Side buttons require WAY more force to press than a G600 or a Naga ( the M95 tries to address that problem) -Drivers suck -Very solid mouse wheel ( probably one of the best ones I have ever felt) -Nice metal bottom -Feels very solid -If you are coming from a naga or a g600 the side buttons placement will likely bother you -Suited for a claw grip ( palm grip wont work unless you have small hands) Make sure you try it out somewhere before you buy...