What RF lenses have you got in your kit and what do you think would be a good place to start. I was considering the RF 100-500mm L, but aside from the weight, nothing is saying it's better glass than the 100-400mm L II. I then thought about the RF 70-200 f2.8L, but no extenders to leverage it as a single go-to lens on a hike (plus not better than the EF II version except weight and size. I've sort of settled on the new RF 100mm f2.8 macro as a starting point; but I'd love to hear your experience.
My EF investment is pretty steep, but I do want a few RFs in there. (I have (all Canon but the one Sigma) 8-15mm f4 L fisheye, Sigma 14mm f1.8 Art, EF 11-24 f4 L, EF 16-35mm f4L IS, TS-E 24mm f3.5L II, EF 40mm f2.8 STM, EF 24-105mm f4L IS, EF 50mm f1.4, EF 65mm MP-E f2.8 1-5X Macro, EF 180mm f3.5L Macro, EF 70-200mm f2.8L II IS, EF 100-400mm f4.5-5.6L II IS, and EF 500mm f4L IS along with 2x III and 1.4x III...tough to replace...got to pick my expenses.)