yes, Zeiss lenses are dangerously appealing if you are the manual focus sort (I am). I have one, the 21mm f/2.8. I still don't have a normal zoom.
Maybe... I used to have a 180mm Sekkor on a Mamiya TLR body before I could afford a 150mm for my 'blad 500 Series. When I could, and bought, I was disappointed in several ways. The Sekkor seemed sweeter, in some odd way that I can't really articulate, and a better length for heads, which was why I bought both of the lenses. 'blad didn't have a 180mm then... The Sonnar was very prone to flair if the sun dared get near it. But that was decades ago, so maybe things have changed a lot chez Zeiss.
Rob C