I'm always distrustful of fancy looking mice but I read a list of the features and it looks great
Nothing is perfect though, and here are some flaws:
- The battery is not properly user-replaceable (you'd need to peel the feet off to dismantle and plop in a new one). It's a lithium battery so obviously degrades over time.
- The logitech software is necessary to configure the gestures (you also need it if you want to change the scroll ratchet behaviour). The software is a little bit annoying and autoupdates, not sure what you can do if you're a linux user.
- The gesture button (which is hidden under the thumb-rest side of the mouse) has to be pressed _down_ to activate, which I still find a little awkward.
- Bluetooth on macs can be spotty (reconnects every hour or so on my macbook, which loses the cursor for a couple of second) - the dongle is more reliable, but there's only a USB-A dongle.
It's also not cheap and there's no left-handed option.
The 2S is just a slightly upgraded model with a bigger battery.
I also swapped the gesture and top button, so pressing down with my thumb switches between free-scrolling and detent mode and I use my index finger for gestures.