Logitech MX Master. It is now on its third generation, but not much is added - the first generation can be got for less than £30 if you catch an offer. The feel is perfect.
On occasion I use a vertical mouse, a wired (weird) DXT Mouse - someone leaving my company gave me it and I had no idea it cost about £80 new until I looked it up! It is astonishingly comfortable and made of high-quality materials (no visible wear after months of use), although it takes a bit of getting used to.
Lucien_Lachance I have the stupid overpriced Razer Mamba Hyperflux combo (pad and mouse) and love it as it is ultralight and fast. I have RSI issues and a superlight mouse is key to long hours on a computer. It worked out the box when I switched to Solus on my gaming machine, and I ran the OpenRazer drivers for a while, but the rgb stuff didn't work with mine, as it is a super niche mouse, so I am currently running it with default drivers again, and all is well. Button settings have never been lost or anything. If you can get one of these set ups NOT at retail (I got a review sample free) I highly recommend them, but damned if I'd ever pay $200 for a mouse.
I use solaar from the repo to sync/manage it
tomocafe I didn't know about this. Thanks!
The cheapest wired Microsoft mouse I could find.
Cheapest wireless mouse in the computer store. Happened to be a logi with some numbers after it but I threw the manual and packaging away.
*Reply obviously inspired by above!
Zowie EC1-A, 'cause I have big hands. still feels a bit weird to use a big mouse after decades of using tiny mice though. plus I'm not really a fan of the coloured LED or the fact that I have to use a mouse mat, but oh well.
until fairly recently I was using a beige eMachines ball mouse of all things 
cleaning the rollers was weirdly satisfying...
I'm using a wireless ergonomic mouse as I had problems with my arm always having to be turned inward with the conventional mouse ('pronation' it's called) which is anatomically unnatural. So, the constant strain was eventually too much and I looked for something cheap which would allow my arm to stay in its natural position lying on the table.
I'm using a PERIXX model no. PERIMICE-713N, part no. TM137. Made in China. Cheap but works great.
Another Logitech user here: M705. Been using it for three years now, still runs on the first set of batteries 
MX Master 2S.
Pretty happy with it in both Windows and Linux.
I use a "Roccat Kone Pure OwlEye", not only for playing - it looks and it feels good.
Unfortunately, it is not supported by the "roccat-tools" (Solus repo 5.6 is dated from 12/2018)
I took a look at the git repo, there is an new version 5.7 from 07/2019 with support for this model
So I wrote an email an now I hope...
laptop touchpad 
tresjam You wrote an email to whom? The better option would be to Request a Package Update
Microsoft Wireless Mobile Mouse 3500. I use them on all my computers, desktop and laptop, Windows and Linux. Good tracking, reliable, lightweight. Nothing fancy, but work okay and come in enough colors (black, gray, cyan, pink, white) that I can keep track of which mouse goes with which laptop.
I use this: https://hackaday.io/project/164247-split-58
A custom made keyboard with an integrated trackball.
And also a roccat kone.
Keyboard shortcuts and touchpad fan. Mice and rollerballs have done terrible things to my hands; i.e. repetitive strain injury (RSI) issues.
What is a mouse? A miserable little pile of secrets. But enough talk… Have at you!
PSX controller! in future will change to an real joystick, like those Logitech ones with buttons on top... everyone knows the real way to control a pointer on the screen is with an airplane like joystick.
