I have a friend who has 35mm slides, 3x3 slides and glass slides that she wants to have turned into digital copies and wants to know if jpeg or TIFF is the way to go? My friend has about 1000 of this mix - her family's pictures - that she wants to have turned into digital images. My friend is very low tech and has a tiny computer...one of those Acer computers. Her brother, has a PC that is probably very good. My friend wants to know what value, if any, the TIFF versions would offer... And would she be able to get an external hard drive that would allow her to have these all in perpetuity? Give the low quality of her little laptop, I am wondering if a TIFF file would be worth while, however she is more concerned about her brother and his children who are more well heeled in the computer department. She has found a local company that will charge about $2.00 (American) for each copy. The upside is that she can deliver the slides and not ship them. Any opinions?