I like that it is easy to use, intuitive, has lots of features, and allows me to easily import documents from other services so I can keep track of my bills in one place! It also has an excellent team behind it who are always willing to help with any issues we have.
Sometimes there's lag time when accessing information but this usually goes away over time if you're patient enough. If you want something simple where you don't need a ton of customization options or complex coding then I highly recommend Fast Democracy as it will do what you need without needing tons of extra bells & whistles. Keeping up with all our bills in one place makes it easier for us to stay organized.