I’ve been using the MX Master 3 Business edition for nearly three years now, and I’ve had little reason to complain. It still works flawlessly. My use cases are fairly specific: editing videos and navigating data-dense spreadsheets. So when Logitech announced the MX Master 4, I was curious to see what had actually changed and whether it would meaningfully improve my workflow.

After using the MX Master 4 for about a week, my takeaway is fairly straightforward. It’s a polished, thoughtfully engineered mouse, but it doesn’t fundamentally alter my day-to-day experience enough to justify switching—at least not without a deliberate effort to relearn how I use a mouse.

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