Upload & Sell: Off
budget wise, my vote would probably be the contax 50/1.7.
zeiss 50/1.4, contax 50/1.4 .. love the images from the ze 50/1.4 when I had it with its weakness being wide open at MFD. I even like the bokeh from this lens as its diff and still pleasing to me compared to other 50s. I dont care too much for the super smooth bokeh . This lens also made me appreciate shooting at a slower aperture since at one point i was shooting mostly primes and wide open or close to wide open. super sharp with nice pop to the pics. I did sell it awhile but after missing the rendering of hte planar 50/1.4, I ended up with the contax 50/1.4
sigma 50/1.4 .. never really shot with this but i processed some of my friends photos from this lens since he was my 2nd shooter for a wedding. Was suprised how sharp this lens was and provided nice pop. If I needed AF, i would probably consider this lens.
olympus 50/1.4 .. another cheap alternative, not shaprness wid eopen but useable although bokeh can be crazy at times but i liked it
rokkor 58/1.2 .. not exactly 50mm but is lens is awesome! if only it can focus to infinity on my 5DII. I mainly use it as a portrait lens at the moment
helios 44M 58/2, S-Takumar 55/1.8 .. very cheap alternative that I keep around to shoot with sometimes. nice cheap lens.
contax N 50/1.4 converted would be my choice if i could afford it