I have this. I also have a similar scanner (Fujitsu ScanSnap S1500). They're both good, for their own reasons.
This scanner is expensive mostly because of the included "Neat" software suite that stores and organizes your documents. Many bad reviews hated it in the past, but the newest version fixes a lot of the complaints, and I like it now.
I recommend it, thought he ScanSnap may be better for you.
I'll copy this from the last time this item was up, as my opinion is unchanged.
In my war on paper clutter, I have purchased all scanners mentioned above, including this one, the Neat mobile scanner, a Epson flatbed scanner, and the ScanSnap S1500. Here's a comparison, a "strategy guide" if you will.
In my opinion, all are great, and I actually use them all. Just depends on what I want to do.
ScanSnap is best for general documents, especially if you make them OCR-read PDFs (this lets you search documents for specific words, etc). It will auto-feed a whole stack of documents, and ask for more. It does scan both sides at once (duplex scan). Not good for photos or thick documents.
Neat Mobile works nice, especially for its portability. Runs off of USB power. But its slow to pull documents through, and you have to hand-feed each sheet. It uses the Neat software to store, manage, and search for your documents. Some like it, others don't. But you can always just scan to vanilla PDF files.
Neat Desktop (this item) is a hybrid of the previous two. It is good for general documents, and it will auto-feed like the ScanSnap. Still uses the Neat software, like or hate it. Does duplex (both sides) scan. Not as fast or good as the ScanSnap, but it is cheaper.
Flatbed scanner: good for high-quality scanning for photos, larger documents, or thick documents. But its super slow.
Hope that helps you select what is best for you. Again, I use them all, each for their strengths. "Right tool for the right job". Overkill? Sure. But works for me.