Hi Rich,
I have Both – the Fujitsu iX500 for my home office and the smaller portable iX100 for my work on-site with clients. I think they are both great and can easily recommend either one.
The smaller iX100 feeds quickly allowing for multiple pages in one PDF which is one of the features of the larger desktop (placing multiple page documents into the scanner and not having to manually feed them). So while with the smaller iX100 you have to manually feed each page it is so quick and easy that it just might be “enough” for your client if he is wanting a less expensive option.
if you scroll down on this link:
Scansnap Features
you can see some of the ways you can handle the finished scan (ie: scan to email, Evernote, dropbox, etc.).
Hope that helps,
Alix