I have had this software since it was beta for Mac. It has improved greatly. I have found that the scanning of receipts is fairly reliable and the info is spotlight searchable.
The process is straightforward. Scan - fill in fields (most are filled in automatically) and you are done.
You can also scan business cards.
I use the portable scanner that comes with the product and have found it easy to carry around in my MBP bag.
Overall, if you want a quick way to scan in stuff while on the go or out of the office, I can recommend. If you want to scan more than 25 pages, get something else that has an auto document feeder.

There have been fairly regular updates too.