At my company laptop I could test already extensively the predecessor M505 and was very pleased.
The Logitech G5 Laser Mouse I was very satisfied and wanted to have another, but unfortunately seem to be the current
Logitech Corded mice probably have a number of quality problems (according to reviews), so I've decided for me cordless.
Clear, M525 and M505 are not super ergonomic mice, but the size really good. And without wires.
In use on the coffee table and on Mouse previously gabs no problems, even if the mouse fell down times.
Battery life I find really great, because I had already concerns.
Cool, I found the choice of colors, a mouse in my Liebliengsfarbe - hurray!
Operation with Windows 7 is briefly commented: Setpoint with the mouse can adapt very well and easily and reliably works.
I found it difficult clues about experiences with Linux to find, so I write here on bissel.
I've tested on openSUSE desktop PC and Macpup Linux on a USB drive on the laptop.
I'm just plug and play - immediately, without large installations and problems. That there are really rare.
My corded SteelSeries Sensei Raw Mouse just would not work under Linux.
Because Windows systems have many known and unknown vulnerabilities, which can more or less virus and Internet protection programs
may close, I decided to test a live Linux for my online banking. For necessary course a mouse.
The Live-Linux (Macpup, a derivative of Puppy Linux) I have a USB flash drive installed, and this stick is plugged in at boot time,
then Linux is booted instead of Windows7, running only in RAM, ie after switching off at the latest, each virus gone.
The online banking then ran with Firefox and the M525 flawlessly under Linux.
My conclusion: a good, robust and universal laptop mouse
My girlfriend she liked it so much that we have bought a second mouse.