I have an opportunity to buy three Kodak hard plastic non-daylight processing ta nks, seven 5x7 hangers, one 4x5 hanger, and four 8x10 hangers -- all used and in good condition -- for $75. I am wondering what type of deal this is and the pr os and cons of tank processing over tray processing. I do tend to scratch negat ives with tray processing more than four 4x5 or two 5x7 negatives at a time. Thanks for the input Jim Worthington