Something of a legend in its own right - this lens has a reputation of relatively strong performance for its year/class in combined with beautiful rendering. In my experience this reputation is well deserved and the lens creates absolutely beautiful images. It's a contemporary to lenses like the Takumar 50mm f/1.4 and my beloved Yashinon-DX 50mm f/1.4. My copy is in great condition and I was able to get it on auction for a good price.
Tamron Multi/C 80-205mm f/3.8
A faster than average portrait zoom
Minolta MC Celtic 135mm f/2.8
A great portraiture lens with a bright aperture.
Minolta MD Rokkor-X 50mm f/1.7
Quality performance in a small lens and affordable price.
Minolta MD Celtic 28mm f/2.8
Extremely lightweight wide angle with good center performance.
Minolta MD Rokkor-X 45mm f/2
A compact near pancake design with phenomenal resolution across the entire image.