Just in case anyone is following this thread, I ended up buying the Fritschi bindings - on the recommendation of a friend, who was using a pair, and the fact that I was getting them at a good price. However, when I came to asking @SpiderJon about quiver killing the skis, he kindly looked at the relative binding fixings for me and found that because I had 'Demo' Marker Griffon bindings (rather than standard) that the Fritschi fixings would be too close to the original fixing holes. I'm now going to try the Coombas with the Griffon bindings before I decide what I'm going to do next. I may have a set of FS Diamir Fritschi Freeride Pro Touring bindings for sale! FYI, I attach a photograph of the relative binding fixing positions, which Jon plotted for me.