I use the Fujitsu Scan Snap on an iMac. Works very well to generate searchable PDF's. Creation of docs in MS Office formats is a bit more problematic: formatting rarely comes out right.
Mostly I use it to turn paper into searchable PDF's which I keep as permanent records, and shred the paper.
It folds up quickly and easily. Very compact when not in use. You will probably still need some kind of flatbed scanner for stuff you cannot feed through the document scanner (e.g., books, cardboard, stuff that is too big). I bought a flat bed scanner for that purpose, but it has been sitting here unused for several months now; only the oddest of the docs I need to scan will not go through the Scan Snap.
It can jam if you try to feed too many docs at once. So if I have a REALLY large doc (lots of pages or thick pages), I just give the scanner a smaller pile of pages, and when it is nearly done with them, drop a few more in.
Check out the
reviews of the Scan Snap on Amazon.