Best tool for UI Automation

I just confused to choose better UI Automation tool for Android and iPhone apps built using Xamarin platforms, please suggest me to pick up the right tool for my needs,

1. Write scripts
2. Need to perform some interactions (Touch, Swipe...)
3. Take screenshots
4. Playback scripts
5. Compare the actual image with expected image
6. Final report with for passed and failed scripts

I have evaluated MonkeyTalk tool, it seems easy to write scripts and run the scripts, it also comes with support for interactions. But it does not support for Xamarin Apps, this is the only reason why i am not chose this tool.

Thanks in advance