Summary: After a year of use, the left click button seems to have broken. It often registers double-clicks when I click it once. Also, when I hold it down (to charge a weapon/spell in games for instance) it usually releases the click even though my finger is still done. It makes lockpicking in Elder Scrolls Online impossible. I did like the braided cord for durability.
Summary: After 4 months I started to get the issue where holding down left click would cause the "flimmer" effect which caused major issues with drawing, dragging icons or gaming (imagine drawing a bow, for example). I got it exchanged for a new one only to get the same issue even earlier on. At this point I just reprogrammed the thumb button to serve as left click and lived with it just because it would've felt silly to throw such an expensive mouse away.
Summary: I like the size, weight, location and layout of buttons, plus a couple extra cool features like the dpi adjustment buttons and the scroll wheel free-spinning thing. This mouse is everything I like in a mouse, except... Two things made this mouse a deal-breaker for me. #1. The grip texture is too slick. When my hands are dry I find my fingers slip more than grip. If you have sweaty palms, then this may not be a big deal to you. #2.
Summary: My old Logitech G9 was wearing out and I decided this mouse was the closest to it in terms of performance, weight, and usefulness. I'm a fingertip (skate style) mouse user. My palm rests on the desk and does not move. I use my thumb and ring finger to "skate" the mouse back and forth. I also use what most people would consider a VERY high DPI. This is from years of FPS play. This mouse is way too high.
Summary: I am a long time G5 user and lover since 2005, and need a replacement after my G5 is not working properly after dropped to the hard floor twice. I immediate choose G500s due to great experience using Logitech product and the G5 series. Sadly, there's more cons compare to pros in G500s and I hope Logitech can make improvement in their next generation G5 series mouse. cons 1.
Summary: This review is to get right to the point. I really like this mouse and it replaced my G9x that stopped working however I can't deal with the fact that the mouse emits a very high pitched noise that gives me a headache after about an hour of use. I sought a replacement and results are the same. I can't recommend this mouse until this issue is fixed.
Summary: I've had four or five replacements of the (G500) and they all double click after a few months, the last one lasted 6months. I just hope the G500s is better or I'll never buy another. I have a 5yr old Microsoft mouse that works great... I have tons of other Logitech products that I've never had an issue with, just the mouse's always go out. I take that back the Logitech 3D pro switches are junk too...
Summary: It gave good service for 23 months. Then the left button started doing double-clicks, like others who have reviewed here. I really liked the feel of this mouse. I like them heavy, so I maxed out on the weights, and over a short time realized that using the programmable buttons held no benefit to me. Still, it had a good feel, and I'm sorry but fifty bucks to replace it with one that will also fail is just too much. No more Logitech mice for me.
Summary: I went from a MX510 to this and its meh. The older MX510/518 mice were far more ergonomic, this strains my wrist some. Also, I thought I was crazy about the high pitched noise but now that I see two other people are complaining about the same thing I know I'm not crazy. Its rather annoying but does go away when you move the mouse. Just bothersome and irritating noise. I have never had a mouse make a noise so I suspect its related to the laser.
Summary: This product can't even be considered because the sensor is at the wrong location on the bottom of the mouse. This causes movements of the cursor to not reflect expected behavior based on hand movements. No other logitech mouse has this issue, it is beyond me why they would ruin their high-end product with such a basic fault.