We are HUGE fans of Google Data Studio here at SCL and have been using it more and more over the last few months. Whilst not without its quirks, it is generally an amazing reporting tool, especially considering itis now free!
You can use Google’s own standard connectors for a wide range of data sources, and if you need to connect to 3rd party services that aren’t included, then SuperMetrics will more than likely have you covered. Or if you are working with bigger accounts, this may be of interest: https://funnel.io/
We’ll be uploading some screenshots of example reports shortly, as well as links to some nice templates we’ve created. Check back soon!