So, my almost 10 year old 5 button Microsoft Intellimouse was worn out. And the mouse marked nowadays seems to be full of either minimal wireless 3-button laptop mouses and grotesque 20-button gamer equipment.
This is, as far as I know, the closest you get the old MS mouse: Scroll wheel with clicks and one button on either side of the mouse (that I use frequently for "previous page" and "next page" when surfing the web).
It is a bit bulky and a bit higher than the old mouse, but I will probably get used to it.
And it will never run out of batteries.