I like that it has an easy to use interface, as well as having multiple ways of calculating pricing for different customers/products in one system! The ability to create proposals from within Salesforce would be great too - but not something we have at this time (or ever will). It's also nice being able to see all my products listed by category so easily without needing separate tabs or filters etc., which can become overwhelming when you're dealing wtih thousands upon THOUSANDS OF PRODUCTSβ¦