Thank you for your responses. I feel that my question is rather useless in a sense. It's easiest (but not always financially feasible) for me to just own and both lenses and sell the one that doesn't really work. (Although I feel that I wouldn't sell either!).
How about a Summitar? Wonderful wonderful lens.
"Make good art!"
- Neil Gaiman
"...the heart and mind are the true lens of the camera".
- Yousuf Karsh
"We are what we repeatedly do. Excellence, then, is not an act, but a habit".