Logitech MX Master 4 vs 3s comparison by a 40 something year old

Ever since I got the Logitech MX Master 3s in December 2023, it’s been my favourite mouse of all time, beating out my previous favourites from the 2000s, the Logitech MX510 and later the Logitech MX518, both discontinued (although there’s a newer reincarnated MX518 now).