I like it, but my GAS affliction already has me on the lookout for the Planar 50 1.4 (even though I have the ZE.. the CY is smaller!) . I picked up a Distagon 28 2.8 (MMJ) and Sonnar 85 2.8 today. Once I get the 50 1.4 I'll make a call on the ML 50's and see what I think. I'm still leaning towards adding the Planar 85 1.4 as well, but want to evaluate the Sonnar 85 first.
have to say that my CY 35-70 3.4 and 50 1.7 planar have made me a Zeiss fan-boy
CY 35-70 3.4
IMAGE LINK: https://flic.kr/p/pFPKJ5 DSC07487 by earl.dieta, on Flickr