The spreadsheet has become the virtual “slide rule” for CMAs. Let’s see how each of the packages did: ABBYY Windows With an astonishing 1.16 MB reduction in file size after OCR, Acrobat 9 with ClearScan is the winner.
Acrobat 9 With ClearScan: 315 KB (-1.16 MB). Since they are different machines, you can’t directly compare the Windows and Mac times, but clearly in both cases Acrobat is faster. I used that as an additional test to see what the difference is. In Acrobat 9 there is a setting called ClearScan. I used these settings on both Windows and Mac. I set the output style to “Searchable Image (Exact)” because leaving it just as Searchable Image in my experience has caused some weird things to happen with the resulting PDF. These were the settings for the Mac ABBYY, and I believe it is what ScanSnap Manager on Windows uses as well. I set Save Mode to “Text under page image” and Quality to High. There were essentially three configurations: ABBYY FineReader 
I tried not to do too many fancy settings to keep things as “real-life” as possible. In that test, I re-scanned with “Create Searchable PDF” checked in the ScanSnap Manager settings. If you know how, please leave a message in the comments. Maybe I am blind, but I couldn’t figure out a way to run ABBYY FineReader for ScanSnap on Windows standalone. Here’s some info on the document that I used: In all cases except one, I scanned without OCR so that I could run it standalone later. It probably would have been better to do this with a bunch of different documents to compare, but hey. I scanned a magazine article for this test. Yes, I realize that Adobe Acrobat X is out, but since I am not aware of any scanners that come bundled with it yet, I decided to stick with the versions that ship with the ScanSnap.
Mac: ABBYY FineReader For ScanSnap 4.1 (run standalone) vs. Windows: ABBYY FineReader For ScanSnap 4.1 (called from ScanSnap Manager) vs. Mac: An old 2.5 GHz Intel Core 2 Duo MacBook Pro with 4 GB RAM running Mac OS X Snow Leopard. 
Windows: A new cheap Acer laptop with a Core i3 2.40 GHz processor and 4 GB RAM running Windows 7. I decided to do a quick test comparing the OCR of the two packages using the following criteria: Why? Well, for starters, both of them come included with models the Fujitsu ScanSnap as well as other scanners. A very common request that I get here at DocumentSnap is to compare the Optical Character Recognition (OCR) capabilities of ABBYY FineReader with Adobe Acrobat.
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