[davidmanze]

"I already own two Helios M44-2 58mmf2.0, even being the same model, one is better than its twin sister,  compared to M44-4 58mmf2.0 the newer one is sharper than both with higher contrast.
So I expect a huge sample variations, and the results to be average at best, no surprises here, however it should be fun to have such a review and you imagine the number of persons often tempted when they see such a lens... And who want a reliable review."
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  The M44-2 is the only one of that series that merits note photographically! ......
........ it is the least sharp and contrasty with the most aberrations and that bubble bokeh at wide apertures .... it has that look ......
........ magically all comes together on stopping down to F8 where the lens is very sharp .......
 I see no real use for the later versions as the character is lost with their better optics ..... and the 50-58mm lenses are so ubiquitous there are many better choices.
 The lenses are super well constructed and very solid .... so I would be surprised by de-centering variations between models ....