OT: sheetfeed scanner recommendations?

[Barry Wiseman]

My client receives documents relating to his inventory items that need 
to be scanned and related to the fP inventory records (highly tenuous 
topic link ;-).

For my other clients this has always been a low-volume proposition 
solved with slow, stupid, cheap flatbed scanners.  This guy, however, is 
processing batches of many hundreds at a time, so speed and ease of 
handling is critical.

The documents are 7"W x 5"D, and laminated on both sides.  Anybody have 
experience with a scanner sheet-feeder that can reliably grab and pull a 
card this small and slippery?