I really loved how light and nimble the lens was to hold. It just felt great in my hands. The front element extending outwards was a bit peculiar at first, as I am used to the EF, but the light and nimble feel really made up for that fast. What I enjoyed most about the RF version was how sharp it was and how well it focused at 200mm. It brought a sense of security to me that I've never felt before, much like the whole EOS R line does focus wise at maximum aperture. The clarity and colors, to me, are just on another level, though that is incredibly subjective. I'll try and post a few sample pictures in a few days when I can get around to it.Great. What is so incredible about this lens from your perspective? A genuine question. Thank you.