Pros:
Scrolling 5/5
-Scrolling on Windows has always be light years behind Mac - even when using a track pad on Windows vs a stepped scroll wheel, the scroll feels jerky and inconsistent while Macs always feel buttery smooth and fluid no matter what device you use. This mouse with the scroll wheel in free spin "MagSpeed" mode is the closest I've ever felt a Windows machine scroll like a Mac. It really is super nice. I almost never put it into the stepped mode. I see a lot of comments talking about inconsistent scrolling on this mouse and I cannot say I have experienced that. For context I am using the Lightspeed connector and not Bluetooth, which I'm sure plays a large factor with the free spin. Let's look at the math behind that. Logitech claims Lightspeed has a 1ms response time, while bluetooth can be as low as 34ms but is often times more around 100-300ms. In "MagSpeed" mode at full spin speed, this mouse will do 1000 lines per second. So yes, for your computer to ingest those line signals it's going to need a 1ms response rate. I am also using Logitech's Options+ software which may also play a role in scrolling stability.
Ergonomics 4/5
-Ergonomics feel really nice to me, but borderline too small. My glove size is between M and L (or 8 and 9), so if you are an L or larger hand maybe this won't work for you, but everyone's comfort is different. The thumb and palm sculpting is really nice and fills the hand nicely (depending on your size). The matte finish texturing also feels nice, I just hope it doesn't deteriorate over time.
Logitech Options+ Software 5/5
-Being able to program the button map per application is a game changer (for me) and has really improved my work flow. DPI can also be adjusted here.
Gesture Button 5/5
-The lower thumb "gesture" button gives back Mac like gestures to mouse users, something I sorta forgot I was missing but use it all the time now.
DPI 5/5
-I found out 8k DPI is too high for my monitor, which was one of the deciding factors for me between this and the MX 3. I have a 49inch ultrawide 32:9 ratio monitor at 5120X1440 resolution, and I could feel the lower DPI of my old mouse on this monitor. However this one set to 8k is crazy fast - way too fast - so I currently have it set to 55% speed. Again lets look at the math - if you have a 8k monitor, this mouse set to max DPI is going to get from the left most side of the screen to the right most side in just 1inch of mouse travel. That's fast - you may find that 8K is overkill for your needs. That said, this is all easily adjustable in the Options+ software and it does feel WAY smoother than any mouse or trackpad I've used. I've yet to use this on glass - I'm sure the DPI helps in that regard.
Click 4/5
-I honestly thought I wouldn't like having a silent click feel, and I like clicky keyboards as well, but it's growing on me. Enough so to make me rethink the type of keyboard I'm using. Click feel and sound ultimately comes down to preference, so all I can say is you feel the click, but it's barely audible. Search youtube or even Amazon reviews, I've seen sound comparisons with this mouse so judge for yourself.
Cons:
Ergonomics:
-The lost point above is due to size - my fourth finger does rest on the desk, which was true of my previous mouse as well so I'm used to it but the experience would be better if there was a rest point or wing on the right side of this mouse. I don't know, this is again preference and hold style but for me I think I would have given a higher score for ergonomics if my pinky didn't touch the desk.
Click:
-Still on the fence on how silent the click is. Feel is good, sound is... well not there. So if you're used to a satisfying click sound this is going to be jarring.
Update 4/13/2023
Custom Button Functions by App Glitch:
When you use the Logi Options+ software to customize how the buttons function by app, sometimes there are glitches. It's not often, may happen once or twice a week, but it seems to forget how to behave from one app to another, and use the incorrect customized settings for the buttons. While mildly annoying, when I open up the Logi Options+ app, it seems to remember again immediately, or if I'm patient enough it will resolve itself after a few minutes without opening the Logi app. Probably a bug that occurs somewhere along the lines of app switching and having many windows open.
Bryan Robertson
Robert Barnes
Yadira