I liked best how easy it was just by using python code we were able to extract text from PDF files with high accuracy (even when there are errors in some pages).
It also allowed us an easier way of adding metadata information about each file extracted. There's nothing bad i disliked so far but perhaps more functionality would have been better than what they provide at this moment. We decided which documents should or shouldn't get scanned because our software could check them automatically without human intervention if necessary.