I use the Nikon Coolscan 9000, but have also had decent results with the Epson V750. For the Nikon I have the glass neg carrier which works well. I have not needed the fluid kit, but friends that have used it with the flatbed scanner have had very good results. The Nikon is I am sure capable of very good results, I can only suggest doing a trial to see if it is worth it to you. Ultimately some of it will come down to style, working with the Hasselblad imposes its own esthetic. There is a film feel that still comes through from the scans, but with additional controls available.
I was working with a glacier image on my 27" monitor and was looking at spots in the sky to clean up, I saw one and zoomed in, and in and in and it turned out to be a helicopter, with another one behind it! I do like the pixel depth that I get with the CFV 50, though a pricey piece of equipment. If used Hassy V lenses weren't such a god deal now I probably would have sprung for the new system.
God luck!