Pros: Extremely configurable. Huge number of protocols supported including SFTP, FTPS, WebDAV. Backups, mirrors, 2-way syncs, multi-way syncs all supported. Python scripting capability included for greater control. Good visual reporting after each sync. Responsive customer service (I found two bugs while trying it out, both were fixed within 2 days.) And for less than $30 USD per license! Cons: it's complex, and although the documentation is robust it is not clear. Therefore this is not for the casual user. But if you are a professional and/or experienced IT person who isn't thrown off by powerful software that takes some getting used to, you'll do fine.