I have 85% of my application automated which means thousands of test cases, yet it can run those test suites without human intervention for long hours without crashing (which i experienced with popular tools in market). Its easy to find help in sahi's official website with great documentation they have. Support team also usually replies within a day for queries mailed to them.

Easy to learn. Flexible framework. Detailed report.

“Relative locators”: a friendly way of locating elements using terms that users use, like “near”, “left of”, “right of”, “above” and “below”. Simple and user-friendly UI and support for multi-browser testing