Given all the discussion about the quality of FSU cameras, it's interesting that their lenses have pretty good reputations. Since most of them date from the time when black & white was much more common than color, it seems that, as in the case of Leica lenses, a lot of people comment more about their b/w qualities than they do about color. Could this be because of chromatic (color) aberrations? More recent types of glass have mitigated such problems to a large degree.
It's always assumed that a lens is to a camera as speakers are to stereo - whatever else you may have, that's the center of attention. So the general thrust is that Soviet lenses are mainly dependable and quite useable. Hard to go wrong with most of them.