We started with the Fujitsu Scan S510 model:The ScanSnap S510 can convert up to 18 pages per minute into a PDF file at the click of a button.It's 18 ppm/36 ipm
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After the first week, we are hooked here in this small office. It is ridiculously easy to setup and run, it saves in searchable PDF, and for the most part, after nearly 5,000 scans per unit, we are moving right along. Cost? $395 per scanner.
NOT TWAIN or ISIS Driver COMPATIBLE....this means you need to use the software that comes with it and only that software. From their site:
One button scanning to searchable PDF
Scan directly to Microsoft® applications
20% faster scanning speed
Business card scanning
Color Duplex 18 pages per minute/36 images per minute