Lore,
The 1200U for $110 is a great price on that scanner (I'd prolly keep it if I got it for that much). 600dpi is enough for scanning printed material for most purposes (unless you are a professional), IMHO. You really need 1200dpi and above when scanning transparencies, 35mm slides, and film to get good resolution (although you are better off with a dedicated slide scanner).
Zerogear,
I know for sure that the Umax Powerlook series uses 1200dpi elements, for one. The Umax Powerlook 1100, for example, quoted from their site employs "a 10,600 element tri-linear CCD", which means that it is a true 1200dpi scanner. It is also quite expensive. The cheaper Umax Astra 4000U might also use a genuine 1200dpi CCD, but I am not sure. The link I listed above indicates that Canon, Agfa, HP, Microtek, and Acer have released 1200dpi scanners, but I'd like to hear confirmation that they are TRUELY 1200dpi and not interpolated like the Epson.
Hope that helps.
subpar