What are the pros and cons of writing C#/Xaml vs. HTML/JavaScript WinRT applications in Windows8

Question

I am planning to develop a metro app which will contact a server and will download and preview images, PDF, audio and video files. I am confused whether to write it in C#/Xaml or in HTML/JavaScript.

I have a C#/Xaml background, what added advantages will i get developing the same in HTML/JavaScript and not in C#/Xaml?

Solution 1

I found an existing thread with several useful answers on this:

https://softwareengineering.stackexchange.com/questions/156361/advantages-and-disadvantages-to-using-xaml-c-or-html5-javascipt-for-metro-apps

Regards, Chris

Solution 2

There is a //Build/ 2013 recording of a session here that is exactly about strengths and weaknesses of each platform.