I have used a couple of those, however only on full frame digital, so I can't give you any information for analog use. If you want to see some images, you can at my flickr page:
https://www.flickr.com/search/?user_id=192035898@N07&sort=date-taken-desc&text=printing ektar&view_all=1
In my opinion removing the stop washers does not improve the quality of those lenses but (at least in my case) adds a lot in terms of fun factor. They produce really interesting bokeh (quite pronounced circles) and can have unexpected reactions to flare. I consider them reasonable macro lenses, if you find some in good condition.
Have you tried using them yet?
Thank you - very interesting. While I've always echoed the voices online who claim that those lenses are Heliar designs, I just re-checked two of mine (72 mm and 91 mm) and I really can't find any indication for this being the case... Going by reflections I would think that they're actually something like 4/4 Dialytes. It's quite possible though that my eyes are missing something, but it would be interesting if there is any actual evidence (like someone who has taken them apart completely) for the Heliar design.