I've been following this discussion with interest, as I've built a Hasselblad system over the past few years with an SWC, and 50, 100, 120 and 180 (all CFi's) with a 501CM.
I did try an 80 CFE over the past few weeks (coincidentally with this thread) as a step between the 100 and 50, but after having being conditioned to the bite and crispness of the 100, I came to feel that the 80 really isn't a lens for me in this range of focal lengths.
I'm constantly blown away with the image quality of the Hasselblad lenses, and don't think there's anything other than a great lens among them - we're spoiled for choice on these great optics. It's only a question of one's personal preferences for focal lengths, and small trade-offs between the lenses which are well documented for those making these decisions.