I used to have a Helios 44-2, which I used with a K-mount adapter on my Pentax film SLR. Very nice results, and, iirc, it focuses pretty close, too. I've generally had excellent results with Soviet lenses in both medium format and 35mm (m42 and Leica screw mounts). Their quality control gets slagged off a fair bit, but I've only ever had one 'bad' lens [the focusing helical was gummed up] and I was able to fix that myself.

I've had good results with the Industar 61, the Jupiter's 8, 9, 11 and 12, the Helios 44-2 and a Volna 90mm in medium format.