I took the plunge and picked this up last time it was on woot. Here's my thoughts on it after having used it since then:
Overall, I'm happy with my purchase. I already had the mobile scanner version of it, and I also have the acclaimed Fujitsu ScanSnap S1500. I will be using all three. It may seem redundant, but they each have their own strengths, and I'm more than willing to drop the money if it helps to keep me organized and de-cluttered. And so far, it does help.
Pro-tip: it appears that you can download the newest version of Neat (version 5) for FREE on their website. Just say that you were a previous user of Neat, and they take you through a couple of screens and give you a download link and a software key. Easy peasy. So if you lost your disc or didn't get one, use this.
I did have one issue, at first. When I set up my Neat database "filing cabinet", I put it on my secondary hard drive. After I spent 4 hours scanning a box of receipts, I closed the program and re-opened it later. It said that my database was corrupt and no longer able to open. What Tiny Flowers?!
Well, it looks like it "forgot" where I had put the database and looked to its default location. When it didn't find it, it freaked out and said it was "corrupt". Yet the database was just fine. So, I simply moved the entire database from my original location to where Neat defaults to and it worked fine. Not an issue since. Strange, but I'll live with it.
Overall, happy with my purchase. Thanks, Woot!