They’re both cute, but the czech variant would be a horror to maintain (leather care), also looks a bit too much like a 2CV. Not going to lie, compared to the Invacar, the soviet variant is much easier on the eye. I could imagine that with a beetle boxer (to keep it somewhat period correct at least).
You’re right, the newer ones look a bit.. soviet, apart from the latest one who does seem to be “slightly” (very) inspired by a 90s Cinquecento.