I owned the zeiss when I was shooting canon, I can't compare it to other lenses. Yet I can safely say it was one of the best lenses I have ever owned. It's 3d pop characteristic always amazed me, in fact I miss it so much, I now shoot leica and bought a 35mm biogon hoping it would recreate the look and feel but was disappointed.
I would recommend it , if you want some images pm me and I will send u my flickr link