I was never really interested in the 70-200mm lenses and I couldn't quite figure out what appealed to a lot of people. The EF mkiii was still really heavy so I figured I´d just get the EF 100-400mm ii which was only 200gr heavier but had double the reach. In 2021, I ordered the RF 100-500mm and it was backordered by several months. So as a "temporary" lens (hint: I still own it

) I got the RF 70-200mm F4 L and man was I impressed! Love the range, perfect for landscapes, catches a lot of details, lightweight (this one is really is) and super flexible. After that, I gave the RF 70-200mm F2.8 and EF 70-200mm F2.8 iii both a try. I didn't like the placement of the control on the RF version and the long throw. Furthermore, it is better than the F4 but not 1.500 $ dollars better imo. The EF version is still pretty heavy (also using an adapter alongside of it) so I didn't keep it.
I am really curious about the RF 70-200mm F2.8 L Z and one day (once my kid/ kids go to school) I'll probably get one for all those events and sports. In September, I am shooting a 50th birthday party and I will borrow the lens for a couple of days. So excited about it.