Logitech's MX Master 4 has a fancy new haptic feedback button, but I'd argue its main draw are the build-quality improvements ...

The Logitech MX Master 4 mouse refines an already near-perfect design, blending innovation and familiarity into one of the ...

You do have to be right-handed, but if you are, the new Logitech MX Master 4 mouse for Mac beats even its predecessors, ...

So, there's the requisite new feature in the form of haptics, and it all falls under "no downsides" in terms of using the MX ...