Wow, I'm thoroughly impressed by the sheer number of good people decided to weigh in on my conundrum. Thanks again,all of you.
Never heard about the Zeiss until now,but it would be an interesting lens if it weren't for the fact that I live in one of the darkest regions of the world. For that fact alone,the Luz 75 suddenly becomes interesting,but I fear what those may go for. Honestly,the AA. crons are out of my price range,thus my initial quest for the elmarit.
E46 thread would be nice for continuity,but honestly,I'm not a filter fanatic. I trust and know modern day coating on front elements to be quite tough,so the only filter likely to come on would be ND ones.
Again,this is some time in the future,fortunately,so I'm going to get lots of time grumbling over what to do..Financial constraints and all..;-)
I am going to Paris quite soon,though,and knowing myself rather well,the second hand stores will be visited more than once.. If I ask nicely, the wife may let me buy something!