Summary: Title says it all. This mouse would rate 5 stars, except that any dust or debris on your mouse pad will lock it up. This can be a disaster in a game. The fit and other ergonomics on this mouse are great, and it's the most comfortable mouse I've used, but it can be maddening when it suddenly only works on one axis because the smallest spec of something got under it. I have to stop, clean my mouse pad, and blow out the hole the the laser sits in to get it working again.
Summary: I wanted this to be as nice a mouse as it seems it would be, however all the things that are supposed to make it great are exactly the things that made it terrible. The interchangeable pinky rests were of poor quality, and specifically the one I wanted to use didn't even fit on the mouse (It literally had the wrong holes drilled and could not be attached).
Summary: I purchased this originally before Mad Catz bought out Saitek and thus took over this brand. It works great and is sturdy and awesome. I've dropped it hundreds of times (eek) and a piece of plastic has split but it just makes the thumbrest slide without needing to use the adjustment screws. Why the 1 star review? I've purchased 3 more of these mice after Mad Catz took over. this was over about 2 years. I have gotten 3 replacement units as well.
Summary: Super customizable no matter how you prefer to hold the mouse. Your hand doesn't get tired after hours of use, I assume partly to being able to make it fit your hand. I prefer corded over cordless and this mouse makes that decision that much easier. The cord never snags or hangs on anything and you can't even tell it's there.
I probably won't by another from this manufacturer.
4 February 2014
Summary: The mouse started out very nice. Customization, lots of options and very precise. Loved it and it performed well for a while. However, around September 2013, the left mouse button began to stick, causing it to double click often. This caused issues when doing anything. Then a month later, the plastic frame holding the left thumb rest broke, causing the thumb rest to move. Furthermore, the little piece that broke is still attached and swings out if I lift the mouse.
Summary: The mouse has a nice modern look and extensive feature set. In addition the ability to customize the fit/size is very nice. However, the build quality is a bit lacking even though at first glance it looks solid. After 18 months the left mouse button started to double click occasionally when only trying to single click (went from 25% of the time to >50% of the time). This is due to the microswitch wearing out from only a year and a half of moderate use.
Summary: some of parts of this mouse were broken at once i bought it, but it isn`t all. i`ve got another problem: the mouse pointer regularly freezes and it kills me. Just horrible!!! NOT RECOMMENDED!!