The two lenses that came across as legendary when I began taking an interest in older equipment were the Dagor and the Hypergon, the latter being the most desired in terms of wanting to try using but harder to find.

I didn't go out of my way to buy a Dagor but was lucky to get one with a camera that lives up to the hbype, it is very sharp, great tonality, excellent coverage, and luckily it's coated.

Heliars are supposedly very desirable but I guess I'm happy with what I have already