I am upgrading from a fairly standard zoom kit for pro sports to a set of primes. In the Canon world I have 300 f2.8, 135 f2, 100 f2.8 and 85 f1.2. Now I want to add a 50 and then a 24, neither of which would be used for sports, more general street, travel, and portrait work. Any suggestions among Canon's two 50s and the Zeiss f1.4 and f2 Planar? Edge to edge sharpness down to max aperture is top of the criteria, color next. Any thoughts would be appreciated. Ready to pull the trigger.