I am super interested in getting one of a Helios 44-2 with the 13 aperture blades. I am a sucker for swirly bokeh in general, but there is something about the look on those that is super compelling to me. Objectively, It seems that they're a bit shit with contrast and sharpness at wider apertures, but somehow I don't care. The dreamy effect outweighs the negatives and even if the image itself is pillow soft, it is absolutely a distinct look and worth it.