I bought this lens because my friend of mine suggest to take me (He has many CZ Distagon lens even the best ones) he say this lens is good as than Distagon. Lens is very nice looking quality built lens. It has excellent sharpness and color rendering. Easy to focusing and catch the right position. I was so much satisfied with this lens. Out perform many $$$ AF lens for reasonable price. To get it quite rare opportunity , not many people want to sell it , because price/performance ratio one of the best.
I am glad that you liked the Yashica 24mm, I am in love with that lens, and this in spite of fact that I have many Distagons. But the ML 24 really deserves to be in the same league as the Distagons.
The Yashica 24mm ML is an outstanding lens, so much so that I bought a second as a spare.