I like the ability to tier your monitors between types. I like the dashboard views, both personal and team, that can be set up. I really love the integrations with other applications, such as pagerduty. Review collected by and hosted on G2.com.
I dislike not being able to mass clear false positives. If you have a false positive, or you forget to enable maintenance mode during a scheduled window, the only way to clear the "downtime" from the system is to open a support ticket with their team and have them remove it. I also dislike that when adding new real-browser (think selenium) style monitors, they have to be individually reviewed, and at least when we set these up about a year ago, you couldn't queue up the entirety of your monitors for review, but had to keep going back and submitting for review after a monitor had been approved. Review collected by and hosted on G2.com.
