This lens still amazes me. It doesn't matter on which camera I mount it on the images are very good and micro-contrast is also very good. With some of these older lenses the lack of contrast is a real turn-off and you can't really bring that back 100% in post-processing.
I had a chance of comparing this lens against the Leica 75 F/2.5 lens on the Fujifilm X-E1 and you just couldn't tell the difference. The images were identical. Now, if mounted on a Leica body you may notice a difference but since I don't own a Leica (and I don't intend owning one) then the CV 75 f/2.5 will do me fine.
I paid in the region of €350 Euro for the CV lens, the Leica will set you back between €1000 and €1300.
That alone is a great arguement for keeping the CV lens (for me).