It is very easy to use, it has all of my tools at one place! I love being able to see what projects are in process along with their status so that I know where they're at or if there's anything amiss before contacting them via email.
It was initially difficult for me to get used to using PM as an admin but now its just second nature - no problems here :) I would like more integration between other software such as Salesforce which could be easily done by allowing access from multiple devices/programs rather than having to login twice (once into prime time / once into sales force). We have been working together since 2014 when we started our business out of university. This program allows us to track everything from quotes given to client reviews submitted back to clients giving feedback & recommendations etc.