I love the MX vertical's ergonomics, it's really the perfect mouse for me in that regard. It just feels... right. But I'm sad that the mouse is absolutely miles away from the MX Master mice in terms of quality and features.

I developed serious wrist/hand pains after switching to the MX Master 3S for a few months, but its magnetic scroll wheel and build quality was absolutely glorious.

The MX vertical is a plastic toy in comparison, but it costs the same.

I am on my 3rd unit because their right button breaks after about a year of use. There are a few threads about it on Reddit and elsewhere. It's such a great mouse otherwise.

You may want to consider Evoluent mice. They’re a bit more expensive, but I have mine for 5 years and it works just fine. As a bonus, they have a true middle button, which is just marvelous.

I like the design, but I had similar problems with the hardware. It sucks paying a premium for a poor product. I've had no issues with thee Kinesis DXT Mouse 3. They have a traditional vertical mouse too. Consider these when your current Logitech breaks.

https://kinesis-ergo.com/products/#mice-and-pointing-devices

I haven't had one actually break but, for sure, the pressure required to click becomes annoying after a year or so.

Logitech's warranty support is pretty good. Have you tried contacting them?

Since there is no left-handed version of the MX Vertical, I recently tested half a dozen left-handed alternatives, and ended up liking this one the best: https://www.amazon.com/dp/B0C3D6853V

I tried a couple of the flashy Chinese junk left handed vertical mice and they were all really really light weight with stiff buttons, so every time I clicked it turned into a click-drag (the force of the click moved the mouse). Is that one different?

I've been using a left handed Evoluent but they never released the latest generation wireless left handed, and the price for the old version is 3x as expensive as it was a couple years ago (and they don't last very long, having owned a couple I get double/triple clicks within a year of buying it). I do like the separate middle mouse button though.

All the non-wheel buttons are easy and comfortable to click and work consistently, I have no issues with them. The mouse wheel could be a bit better (it’s ratcheted, which I prefer, not free-wheeling), but is good enough for me. I generally don’t use the middle mouse button.

The gliding skates aren’t too great, I replaced them with aftermarket ones.

The RGB lights can be turned off permanently by long press on the DPI button.

Perixx makes a few left-handed variants of their mice. I’ve been using their Perimice 513L for several years. Sadly, their newer models are all wireless.

https://perixx.com/products/perimice-513l

https://perixx.com/products/perimice-713l

https://perixx.com/products/perimice-719l

I tried the 719L and didn’t like its shape, too small/round. I should try the x13L ones, not sure why I didn’t.

+1

The mouse has disappeared into my hand and I've forgotten its existence. When I read your post I remembered how pain free my mousing experience has been lately.

I switched from a vertical mouse to Logitech MX and I wish the vertical one would have felt more comfortable because there are many more to chose from and they're easier to fit on large hands.

I've tried everything after setting my seating and table properly and it seems this is my thing. I bough 4 more because I fear, like with everything good, Logitech might stop selling them and I'd be lost...

I ditched the Logitech MX Vertical for the Ergodriven Om Mouse: https://ergodriven.com/products/the-vertical-handshake-mouse.

The Logitech middle button is awful hard to click.

I wish that web page would show it actually being used. Basic question: Is it a mouse or a trackball?

Mouse

Sharkfin Squad! It feels less precise than my regular gaming mouse, but I use it for work, and don't really need pinpoint accuracy. Been loving it ever since, and I even got a travel case for it.

Also, it can be used as a bluetooth mouse on my Samsung phone, which was neat.

+1 as well, this mouse and a split keyboard have made my wrist pain virtually nonexistent

I wish the coating lasted longer, I had to throw some tape on mine to keep using it - the rubber keeps wearing down.

I find it hilarious/sad that the 0.5x cheaper Ergo M575 has much better design in that regard (just plastic that doesn’t degrade)