I have the Dual Scan III. It's cheap and good, but no Digital ICE.
You might want to consider Canon's FS4000U. It scans up to 4000dpi and has FARE (Canon's own version of ICE). Believe it's selling in the shops for only $899 or so. It's a great price as it used to retail for $1600 (I think) or so. Supports only USB 1.1 though.
MW