This, and I am embarrased to say, is the firs time I hear about these lenses. Can someone give some background?
After WWII the Soviets took apart a Zeiss lens factory shipped it back to Russia. It is basically a copy of the Carl Zeiss Biotar optical formula. The were one of the kit options on the Zenit cameras which were one of the most manufactured cameras in the world. This make old Helios 44 lens a very common lens in Europe. They are rather expensive in US but if you are willing to Ebay from Europe you can get one for a very reasonable price.
I don't have one but do have a Helios 40-4f 1.8 that is not quite as good.
7D II, 60D, Rebel XS, EF-S 15-85, EF 70-200f4L, EF 100f2.8L, Tamron 70-300VC, Tamron 28-75f2.8, Tamron 150-600, EF 40f2.8, EF 50f1.8, EF 85f1.8, EF 24mmf2.8IS EOS M-EF adapter, A7II, SEL50f18, SEL1018, DN 30f2.8, adpaters and Fd and M42 lens.