What can I say; I bought this mouse for gaming a little over a month ago and I love it so far. On sale for $39, it's a superb value, and a good value at the $45-$50 or so you can find it elsewhere. Plug and play, worked very easily on the first try. I didn't have to download the software to manage it because I already own Logitech headphones that use the same suite (all your Logitech devices and settings are consolidated into the suite for ease of access and streamlined updating, a fantastic design). It's accurate and responsive, button clicks are firm to avoid accidental clicks but not so much that your hand tires from excessive press force. The design is super simple in terms of ergonomics, and your hand will thank you if you palm/skate your mouse for long periods of time. It has a tune-able weight cartridge to change the weight of the mouse, where I put all of the heaviest weights possible, as I like a hefty mouse. Adjustable DPI settings with just the click of a the DPI up or down buttons on the mouse, and you can also use the software to define the different levels of DPI that each "level" will achieve, so you can set DPI to just about every number within the range up to 8000 .DPI (believe there are 5 levels of adjustment that you can pre-define) You can define macros and buttons, and even DPI levels for individual programs that will be activated automatically when starting the program (linked to the program .exe) so no more manually selecting profiles if you do not wish to, as well a program the buttons to do many other things (too many to explain all right here). There's also a mechanical toggle switch just behind the wheel that makes the wheel turn in click-like increments for menu scrolling, or makes it free floating for quick scrolling through long documents, which is very useful when you are selecting in game inventory menus one minute, and scrolling through a long journal entry in the same game the next. The only parts I found odd were the rather small sized and spaced thumb buttons and the grainy texture on the sides of the mouse. It takes some getting used to, but I've come to learn to make accurate clicks on the small buttons and he grainy texture isn't annoying to the point of being uncomfortable.

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