I liked the 35 mm Summicron IV when I had it, but at the time, it was an ~800 USD lens, and I thought I was getting away with robbery when I sold it for around 1700. Much of it's reputation seems based on 1990s articles by
Mike Johnston and
Harold Merklinger, which did much to introduce English-speaking enthusiasts with the concept of "bokeh".
But IMO, much has changed since the 1990s! Today, lens designers are keenly aware that good bokeh sells new lenses, and as a result, they prioritize it, at least in the higher-grade products. Not sure where the small size / nice bokeh sweet spot for Cosina Voigtlander is: The mid-line Heliar lenses perhaps? Am a bit embarassed to admit that I have a brand-new 40 mm Heliar on hand, and have not yet tested it at all: So many pleasant distractions these days!