Clarify the differences between the versions (Compact vs. Home vs. Professional) on your web site, to simplify the purchase decision. Maybe even eliminate some of the incremental flavors.

GAOTD regulars have seen many versions of "Backup and Recovery" come through this channel, and the question about features and "overlap" is valid, and not necessary if the website could provide clear direction. Maybe if the versions had clear distinctions (Compact never has x, Home always has y but never z), then the differences would be easier to follow.