I would say it is worth it yes, if it covers what you need. The RF version is more expensive and I think at least you are able to use the EF lens on both camera types if ever needed.I have this lens and it is a beauty, I use it on the R5 with an adapter and it works flawlessly. Still a really great lens if you need f/2.8. I use it for Milky Way shots and it's great at 24mm, but if you don't really need f/2.8 you can look at the 24-105 f/4 L IS II as it comes in a fair bit cheaper and is still a really great lens with more range upto 105mm.