I’m impressed by this little workhorse.
This unit has an automatic document feed, and ability to scan duplex (both sides). It's best for document storage, but I found it a reasonable performer for photographs as well.
It's about the size of a six-pack of soda, much smaller than a flat-bed scanner, so the desk space investment isn't much.
It scans to PDF and JPEG (no TWAIN support, which means you can't hook it up applications like Photoshop). This is not much of a problem for normal document storage.
It will scan about 15+ pages per second, but photographs are slower. Since it's an ADF scanner, you can load the hopper with up with 50 documents and sit back and watch it.
Here's a video of it scanning in 'fast mode'. This is the mode you use for document scanning. It is the same speed in simplex (one side) or duplex (two sides).
Here's a video of it scanning in 'slow mode', which is best for photographs. It is the same speed in simplex (one side) or duplex (two sides).
It's available for about $400 +/- $50.
It also comes with a (nearly?) full version of Acrobat, which , depending on whether you needed it already or not is worth a few hundred dollars.
I highly recommend getting it from somewhere with a reasonable return/exchange policy (like Amazon).
This is the model I have.
Note, the unit below is a slightly newer model than mine. It comes with the OCR software from ABBY included (it was free with mine, but arrived separately) and apparently may be better at scanning mixed size documents, which would be great.
If you're looking to embark on the paperless home or office (or approach that lofty standard, or just remove some clutter, this unit is a reasonably priced way to start.