Don't even bother researching further. Just buy this one. You won't want to return it.
I put this in my wish list. What a wonderful surprise to get it as a Christmas present! As I'm close to paperless now, I use a scanner frequently for my home office. I've had about every brand you can think of over the years. There is isn't a single one that comes close to the speed, quality and ease of use. I had some sort of conflict with the scanning software I had been using (NeatReceipts) when I installed the software utility for this. I called customer service and I will give Ravenly great reviews of the assistance I received also :)
My son, who got this for me, used it for the first time yesterday. He has recommended their office purchase one. He's a Mac user. I'm Windows. He loved the fact it was so easy to use and send docs to other places without being connected to any type of computer. HIGHLY RECOMMEND!