We use this as our alumni database, in addition to using it for donors - it's great for tracking things like employment, in addition to addresses, emails, phones, etc. It holds a LOT of information in a single database, which is great. There's plenty of space for you to track pretty much whatever you want.
It's not necessarily very intuitive - I've been working with it for almost three years and I still don't know how to delete a duplicate phone number. There's a "delete" button but as far as I can tell, it doesn't do anything. It can be a bit clunky when inserting information - it can't detect the state (or "place") of an address from the ZIP code like other programs I've used, and you have to scroll all the way down for USA in the countries list.
It works well for us because it allows us to also track things like giving and event trends, so we can see any correlations. It is also nice because it allows alumni and advancement to see what communications the other department has had with different individuals. Very nice, great for keeping all this info under one roof.