Defeating by way of charge, or lack there of... =\
28 March 2014
Summary: Like others have said, the length of charge is horrible. I get at most a day and a half of use before I have to recharge it. This is so inconvenient, that it becomes a corded mouse at my desk. But herein lies the defect in this device: Once plugged in and charged up, the charge through USB ceases, and you then are running off of battery even though you are still plugged in through USB, and even though the charge lights are all green indicating fully charged, as soon as...
Summary: I have a Logitech G700 at home that has the exact same issue. I'll never buy a Logitech mouse again. Someone explain to me how a $100 mouse in the year 2014 cannot perform it's most BASIC function compared to some abused 10 year-old $5 Dell mouse? Absolutely no excuse. Logitech should be embarrassed.
Pros: Feels nice, wireless, dual mode scroll wheel, all the other obvious pros/features.
Cons: We have 2 of these in our IT dept and they both developed issues with the left button that have been discussed in many reviews already. You go to single-click, and it double-clicks. You go to drag a window, and it randomly lets go and grabs again on something else. Totally useless mouse.
Cons: Scroll wheel has unacceptable settling time, bounces up and down a few lines after stopping scroll. Battery doesn't last more than a few days. Left click routinely goes unresponsive, need to reboot IE often to re-establish comms. Response jittery.
Summary: I own this mouse for about 2 years now and it has been brilliant till date. Unfortunately it no longer works on Mac (after updateing to OS X 10.9 Mavericks). The mouse tracks and all buttons reacts to clicks but dragging is no longer possible which makes the mouse unusable for any kind of work. There hasn't been a firmware or driver update that would fix this despite the fact that Mavericks came out like 6 months ago.
Summary: I am one of 10% of the worlds population that using a mouse ergonomically designed for right handed people is uncomfortable. I would like to see a mouse of this quality made either symmetrical or with a left handed design as well, even if I had to special order it direct from Logitech. The only mice I see that are symmetrical lately are the lower end models, and I want quality.
Excerpt: My old mouse lasted a year (not this one) and a co-worker recommended this. I work with 3D CAD programs and use all the buttons including pushing down on the wheel ("Generic" button). The first Performance MX I purchased did not have any type of mechanical click for the "Generic" button and it would need to be held down for much longer than a click in order to work.
Summary: It seems like a great idea: A rechargeable battery in the device. But wait until you try it in practice. A regular computer user -- four hours a day or so -- will quickly find that the device needs recharging practically every day. And you find out in the most unpleasant day: erratic and unresponsive behavior. So now you are in a middle of a project and you need to plug in your "wireless" device so you can continue working while it is recharging.