Part of the reason we are going digital is because we have 22 four drawer file cabinets and are out of space. Also, too many files have been put in the wrong place or destroyed. Going digital eliminates all these problems. We need to seach the reports by word which is why we have been OCR'ing all the report so that we can search inside each report. We tried the demo of Foxit Phantom PDF and it appears to suit our needs, just need to overcome that learning curve to work the software.
OK, you hadn't actually mentioned that you've been OCRing them, just that they'd been "scanned".
If you need to be able search for literally any word(s) that appear anywhere in one or more of the docs, be sure whatever software you end up with can/will index the entire collection, preferably in the background and preferably as they're added to the database/file structure, rather than literally searching through
every document word-by-word,
every time someone needs to look for something. Otherwise a lot of those searches will (more or less randomly) take
forever to run with that many total reports being accessible. If it's feasible in your circumstances, also consider using frequently used "tags" or "keywords", leaving "search entire file contents" as a last resort option for when the title/filename and/or keywords aren't enough...