I'm planning on introducing e2e test in my startup. My success criteria is high ROI. Meaning creating, running and debugging tests is fast and easy and the tests are not flaky.

I understand that those criterias can be achieved with any tool if you know how to properly architect the environment and use the tool, but to me it's a failure of a tool if it can only be properly used by the experts. I'm not an expert by any means in e2e.

So which tool sets me up for success the most by default?