Nicest aftermarket skates.
I recently upgraded from my 6 years old Logitech G Pro Wireless to a G Pro 2 Lightspeed, and as soon as I received it, I also changed its stock feet to a set of YanZi PTFE Skates: the difference is night and day, the mouse now glides way more freely and smoother as ever, and the result is noticeable on both hard and soft surfaces. For reference, the mousepad I'm using at the moment is a SteelSeries 9HD. These skates are a no-brainer alternative to anyone looking for a smooth, consistent glide in their mice.
There's only one caveat: the product page shows a plastic tool that helps you remove the stock mouse feet, but the packaging doesn't includes it, it's kinda weird since even the included guide shows that tool.