Pros: I've owned many Logitech components over many years and have been satisfied with the quality.

Cons: None

Pros: Like the size and the buttons position.

Cons: To configure my desire key stroke took more time. Going to the Logitech portal bla bla...

Pros: - Simple 5 button layout. I don't need a keypad built into the side of my mouse.
--- Has a well-placed forward and back browse button.
- 1000 dpi
- Tilt wheel

Cons: - Wheel roll accuracy isn't consistent across units. It can also degrade
- Grip rubber isn't gonna last much more than a couple months of daily use. Nails and finger tips will wear it down fast

Other Thoughts: I have used this mouse as my daily driver for over 5 years. I love the simple 5-button design (no stupid keypads on my mice!) and I use it regularly for various types of gaming from GTAV to Depth. (not an ultra-competitive gamer). It has a few downsides but overall I'd recommend this as a daily driver.

Pros: It works as smooth as butter

Cons: NONE

Other Thoughts: It works on Ubuntu, Linux Mint, Arch, Fedora and more.

Pros: - Solid feel, comfortable design
- Enough buttons for most functions
- Exceptionally long battery life- I finally replaced mine for the first time after more than a year
- Accurate, rarely needs cleaning
- As nice or nicer than much more expensive models- I've tried several others to see if I liked them better (Logitech m560, Several Razers, Microsoft this and that, etc etc)... keep coming back to the 510.

Cons: It spoils you. I had to buy one for my work machine too because I couldn't stand using the m560 they bought for me.

Other Thoughts: All purpose mouse that you won't be disappointed in. You can game with it, work with it, travel with it, etc. It's REALLY cheap for what you get.

For you folks that like to fidget with something when you think- when you set it on a desk upside down, you can spin it with your index finger like a top. For reasons I can't explain, this is very gratifying.

5/5 would recommend.

Pros: The grip is really comfortable and ergonomic. The back/forward buttons are very nicely positioned; they're easy to get to, but not in the way. The scroll wheel is very nice, and I really love being able to scroll horizontally. Left/right/middle clicking all feel great, and the clicking sound isn't too loud. The USB receiver is small enough that I can just leave it in my laptop even when I'm traveling. The mouse is plug and play -- no setup or drivers required. Battery lasts a really long time; I've had mine for like 14 months and I think I've replaced the batteries maybe once (though I do turn the mouse off whenever I'm not using it, which has surely helped).

Cons: I'm a Linux user, and unfortunately the Logitech Unifying Receiver software doesn't work with Linux. Most users won't need this software, but if you ever lose your receiver and have to get a replacement, or if you want to link another Logitech device to your receiver, you need the software. But if you're on Windows, this shouldn't be a problem (not sure about Mac).

Other Thoughts: This is my long-standing favorite mouse, and the only mouse I ever buy anymore. I don't see myself switching from the M510 any time soon.

Pros: Fits my hand well.
Great range. I moved away 16 feet to the far wall and it still worked perfect. Didn't see any reason to try it any farther.

Cons: 2 buttons on left side by thumb. One on each side would be great but 2 together is not so good.

Other Thoughts: Don't see why several of you have had problems with range. 16 ft was no problem for me and I'm sure it would have worked farther.

Pros: The physical design of the mouse is very pleasing. It's quite comfortable in your hand.

Cons: Everything else. The biggest complaint seems to be that that it gets terrible reception, and my experience is no exception. It's nearly impossible to do any sort of gaming as the mouse constantly jitters, and the cursor moves at odd and unexpected angles. Basically, smooth movements for FPS gaming is out of the question, and quickly selecting small units in RTS games is like gambling "Sometimes you hit sometimes you miss". You tend to get used to expecting where your cursor should be, and this mouse makes that nearly impossible.

Another issue that I haven't seen in the other comments is that the sensor on the bottom of the mouse is off-center. You can turn most mouses to make minor adjustments for comfort without the cursor moving too much. Because this mouse's sensor is off center the cursor moves a ton when rotating the mouse. It's very annoying and can cause problems when quickly adjusting the mouse's angle for comfort.

Other Thoughts: If you intend to do any sort of gaming DO NOT BUY THIS MOUSE Actually, just don't buy this mouse in general.

Pros: Full size! Hand cramps are gone!

Cons: Optional software is a pain to update sometimes.
After it's up-to-date you are good to go.

Other Thoughts: Mouse wheel doesn't "spin" like my old M525.
I miss that feature, because I could scroll documents with lightning speed.

If you like that tactile feel in a scroll wheel, this mouse is for you.

Pros: Just needed a simple wireless mouse for my laptops. I now have 2 of these and it fulfills my basic need of a compact mouse as well as a back/forth button which is important to me. BONUS is when transporting it, there is a sweet internal usb pocket in the battery compartment! Simple but wonderful!

Cons: None

Other Thoughts: None