I have a Joris and gave thought to the R-41 but after using the Joris(because it shaves so well) quite a bit, I decided not to. At this point with my Joris and 37c ,I'm happy. Now that doesn't mean to say that at some point in the future that I won't get one. Then again with a modern slant about to come out, it'll be some time. Which ever way you go, enjoy!
I've used both a Joris and the R41 2013. The shave quality is nearly identical, IMO, as is construction quality. The Muhle Rosegold model is an attractive option, and Muhle's ability to take a number of custom handles may also be a plus for you.