If you're looking for free and very good OCR soft, use SimpleOCR from
http://www.simpleocr.com/
I've been using this and has a 90% success rate on the documents. I've tried abbyy finereader before, but its paid, and its bloated, so dropped it.
I personally use simpleocr to scan documents, edit it a bit, and use cutepdf to print it to a pdf for future use.