I like that it is easy enough to use as an end user but also allows us developers access into our data with ease when needed.
There are times where we have had issues getting past some permissions or other errors which can be frustrating at best especially if you don't know what's causing them. We've found this tool very helpful so far though there may come time were something better comes along. Our main goal was just simple analytics tracking from one platform across multiple sites/websites without having too many moving parts between systems.