We ended up purchasing two (for now) Canon DR-2140 and they are great machines with ton of options and settings. There are few quirks however that we didn't expect and one that we couldn't get around. For the good things; its fast, rarely jams, easy feeding and pickup.. we scan ton of W-2's and so far no issues. Driver settings are plentiful and easy to understand with great help documentation. 

Odd/Bad things: We can't get the stop button in QF to stop the scanner.. we can start it from QF but not stop. If someone has any suggestions please let me know. We tried just about every option. We use QF user interface and don't like to have TWAIN screen to click scan to come up.. we have it set so that user clicks Start in QF and it starts scanning without any pop-ups. Another odd thing is that we had some color pictures of W-2s that customer took with their phone, we printed in black and white and it's rather dark gray but you can still read everything, but under TWAIN scanning it would actually discard those and they would never come over to QF or if they did they were too dark.. tried number of settings but nothing really worked. They came over just fine on Fujitsu. We ended up installing Kofax and setting auto brightness on and pages came over crystal clear.. dark gray background was turned into white and text and lines were black, just perfect. Imprinter is optional add on is another issue so we will need to purchase $320 kit.

I think that's all for the quirks/bad stuff for now. Hopefully this helps someone trying to make a decision on scanners. I still like it and I'm glad we bought it even with few of those quirks.