I can be mistaken but I believed there is no difference between the imagebanks. You have 2 type, type I (older and larger used with the 96, 384, 132 &528) en the newer version type II (smaller and can be used with the newer backs like the CF22/CF39 and the H3 series).
I can be mistaken as I said so maybe one of the people that know this for sure can drop in?
You are correct. There is the old Image Bank, which is a 40 gig hard drive. The newer one is smaller and its got more capacity. The older Image Bank is used with the 96, 384, 132, and 528.