Top unit, fast, reliable, efficient

Positives:
+ Supplied everything is what I need to archive my extensive document archives.
+ The software is OK (were any better, some configuration options), text recognition works great.
+ The device is working properly, very quietly and is extremely practical.
+ The workflow is solved very intuitive: for archiving operations If, in the software, the function of the Scan button in the correct orientation (resolution, storage format, compression, color / B & W / Grey / Automatic mode, location, file name, etc.), and already can whole shelves are digitized.
+ The speed is impressive: at me the device attached to the USB 3.0 interface (ASUS motherboard), business cards are literally 'shot through', A4 pages fluppen super-fast through.
+ When archiving activities the preparation is the most tedious (remove paper clips, staples, double sides splitting, etc); the scanner itself causes absolutely no waiting.
+ Blank pages are reliably sorted out (No false IDs), the automatic orientation mode is also quite good, but not perfect (depends namely of very high quality / uniqueness of the template that therefore no deduction for the scanner).
+ So far I have over 1,000 pages scanned throughout older documents, and yet all the leaves have been reliably drafted.

Neutral:
- Occasionally, however, very thin stack with 2-3 leaf be confiscated immediately because helps short lifting and re-insert. But tends to be rare, but deducted a point not really worth.
- Wifi -> see below in the 'EDIT'.

** Because one reviewer missing TWAIN interface even violently complaining, here for those who do not know exactly what that is actually: TWAIN is a standard interface to access, inter alia, for scanners, on the other, image-processing programs on the scanner. The standard VA has prevailed in the professional field, but is software that can work with TWAIN-enabled hardware typically also much more expensive.

Who needs TWAIN scanner?
Some offices have very extensive document management systems, or document capture applications that can access its own user interface to external hardware. That can not be with this model, plus there are other, professional scanners from Fujitsu, about the workplace scanner fi-6110, but the mind. 100-200 EUR more costs, but up on the TWAIN interface provides no further advantages.

The ScanSnap ix500 has namely compared yet
+ The new GI scan processor (25 pages per minute is sensational to the price)
+ USB 3.0 port
+ Relatively inexpensive ABBYY text recognition, which works absolutely professionally

I have purchased the product in the market place without the Acrobat license, making it around 100 euros cheaper (I already had a license). The contained in the desktop version Rack2-Filer Smart and Magic Desktop SW I also unnecessary, since I store all data folder based.

Certainly not a bargain, but ideal for me as an individual, to make room on my shelves
For anyone with similar needs a strong buy recommendation!

... And if you helped my review, I thank you for the positive review! ;)

EDIT (December, 2013):
+ / 0 (pos / neutral): I have now tested (since Auguts 2013) The WiFi feature. Works for me under Android completely reliable, so you can load scanned documents directly to a mobile device, without going through the PC. Those who work mainly on Tablets & Co, could it find favor. For myself, this feature is not of great charm.
+ (Positive): Meanwhile, a friend of the device was interested and available with Mac drivers is a good choice for offices with several hardware platforms, although not networkable.