I'm puzzled why you expect your tenant's content insurance to cover it, why not claim on your own household insurance?

That Super Takumar 55mm f/2 came out really well!

As to image quality there isn't much to choose. Obviously the former is faster, wider and significantly heavier, the latter is slower, longer and lighter! If a faster lens is needed for sports or theatrical work then the former is useful otherwise the one you've got does the job.

I wouldn't like to commit myself yet. I'll wait and see if the upgrade makes any real difference. If it does I may well update it, if marginal then no.

Just wondering, are you comparing like with like...?
Was that D500 shooting raw as well?

I have the 90mm version and know someone in Bolton who has one of those 55mm. Both were purchased new from London Camera Exchange in Cannon Street as discontinued items (many moons ago.) Given the owner of the 55mm has defected to Canon I'll see if he is prepared to part with it.
With my 90mm, rather than use the 62mm filter I push fitted an adapter ring so it would take 49mm filters.
John, would you be interested in popping over to Bolton if he wishes to move the 55mm one on? (Can't promise he will but suspect he may do.) I'll ask him tonight.

The danger is thinking everyone else thinks the same as you. Of course they don't.

You didn't trust hooking up your K1 to it then?!

No, just one of these https://play.google.com/store/apps/details?id=com.ikoriko.pentax&hl=en