For sheer IQ the Milvus most probably trounces the ts-e 24mm, at all apertures -no direct experience with the new 25. I did a relatively unfair comparison between the 24 TS-E mk2 and the 28mm Otus (the Milvus shares a lot of that DNA, especially stopped down). No contest - the Otus massacred the ts-e. The Canon images looked dull, artificial and lifeless, compared to the Zeiss ones. This has been my experience, over and over, with multiple Canon and Nikon top lenses, versus Zeiss counterparts. I needed (and still need) the movements, in a wideangle (I have the Hartblei Zeiss tilt-shit lenses from 40mm upwards) but I simply can't give up that much IQ, so I'm forcing myself into all sorts of other technical solutions (nodal stitching, focus-stacking etc.) waiting / praying for a high quality wideangle ts lens from Zeiss or Sony. No easy choice, here.