Well, actually Enna's were West Germany (Munich)
Not so important... we are not so strict here, isn't it?
I like Enna lenses, and one of them is at the very top of my dream lenses (85mm f/1.5 in M42 mount, any version). Unfortunately it seems i'm not the only one who longs for this objective, prices are very high.
It's a pity that the old Enna lenses, like yours, have a nicer build, while the newer partly plastic versions have so-and-so build but improved optical design (at least some).
I used a late (all black) 2.8/135mm to shoot a concert, the results were better than expected.
The old version with the same speed/focal was more solid, and probably with tighter tolerances, but it's not as easy to use because the diaphragm ring rotates with the front of the lens when focusing. Not very ergonomic!
Regarding the 35mm, i guess all your 35mm lenses in M42 mount should give a comparable performance at f/11, at least at the center of the frame.
Some people snob Enna's and Soligor's. I don't agree with such blanket statements. There are lenses and lenses.
Enna devised the second zoom lens ever, after the Zoomar (which gave its name to the category of variable focal objectives).
Japanese were far behind at that time...
I see you also have a Soligor C/D 2/35mm.
I like Soligor C/D primes, for the most part made by Tokina.
How is yours? You can PM me if you tested it well enough, here would be off-topic
cheers
Paolo