Ask: What automated testing approach do you use for browser based UIs?

I am interested in the tools/approaches you use to test browser based UIs in an automated manner. Maybe you can share your experience and the effort to implement it and/or the amount of maintenace this approach entails. I have the feeling there is not yet a somehow industry-standard of solving this problem.

Personally, I am using a protractor based DSL to test the UI in isolation, using a mocked BE or mocked requests. Its quite stable, and maintenance efforts are low, cause we keep the number of explicit assertions at a minimum. I am well aware of the long list of tools you can use (robotframework, nightwatch.js, selenium directly...).

Thanks in advance.