These two are pretty rare. I have never seen them in person
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I have the 80mm f/2. Tt's a nice lens but noticably softer then the Zeiss 80 2.8, and ofcourse it's quite chubby (although smaller then the 50/2.8 or 180/2.8), and it's focus ring turn is somewhat too long and annoyingly takes other filters then the 2.8 wide and tele.
It's not really a general purpose lens for those reasons, i only ever pack it when i know i really want to shoot at f/2.
Now, the Zeiss 110mm is honestly what i would really want and would swap the Xenotar for if one were available, the slightly long-normal is perfect for a lot of what i do. I saw one pop up in Ebay USA but at 5000$ it just wasn't a realistic proposition.
...One day