All things considered, the Imacon is a clearly superior scanner. It should be given what it costs. It should be noted that the Precision II is a superbly made product. In the end I bought the Imacon FlexTight Photo . It uses the same flexible film holders that curve the film in a arc so that the light source and CCDs always scan the film at the exact same focus point, providing absolute film flatness.
Build quality is first rate and there are no mirrors between the CCD and the imaging lens.
It has Rodenstock internal optics and the 3-8000 pixel scanning CCDs are from Kodak. Top ranked components. Initial results with the Imacon Photo are excellent. My medium format work has never looked so good, but the downside is that I now have to re-scan all of my important medium format work. The difference is that dramatic.