I bought this for my husband who travels for weeks or months at a time. He has to keep track of his receipts and sometimes on site he needs to be able to make a copy of something. I read all the reviews and went for it. He said it worked great and he followed the "scanning" advice I had read about. According to him the "learning curve" for proper use was nil, it worked fine the first time, gave a quality scan and fits nicely in his laptop bag. Fortunatley this one came with the memory card, which he says will work great for transfering the info. And as suggested for small papers (like receipts) he puts them in a clear page protector so he can hold the edges and scan - worked like a charm!! As for the O-Stock part of the review - as usual the shipping time and service was awesome, and the product was as described!!