Upload & Sell: Off
I picked up a really nice deal on a Mamiya 645. It only has a 22mp back on it but the images compared to a 1DsIII were outstanding. On comparing the 2, the 1Ds looked terrible with the blacks all washed out. Nothing wrong with the exposure it was just the medium format has so much detail.
Be wary. Although it says a 22mp back, the RAW files are 48MB. Converting to 16 bit TIFF to allow work in normal programs, files are 128MB. It does require a different perspective and workflow when working on files.