The ease of use for customers, sales reps & marketing team members! They were always available via email or phone when I needed support from their technical staff (which was rare). No complaints about this system at all -- it's been great working w/ them so far :) If you're looking for something simple but powerful--this could be your best option. We've seen significant improvements in turnaround time between our clients' responses as well as reduced costs by having quicker access to information regarding client satisfaction.