Hi
As I assume you know, some improvements were made with the newer CFi/CFE-lenses in general. A bit more reliable shutter, smoother focus, better straylight-d&ing in some special cases and so. But still, with resepct to results in practical use, these changes only make a hairline distinction.
Still, as only an amateur, I have the CFi 3.5/30...
Here are the MTF-curves for the two versions.
The information of the first diagram, for the CF-version, is from the sales manual of Hasselblad from 1986. The information of the CFi can be downloaded from the Hasselblad web-site.
MTF-curves for the CF 3.5/30
MTF-curves for the newest CFi 3.5/30
These beauties are very special, and my CFi 3.5/30 has become my favorite lens. One thing is for sure: If they scare someone away, it is not due to their optical performances. Enjoy!