Approaches to develop Windows Phone 8.1 app

There are three approaches to develop Windows Phone 8.1 apps XAML Apps. I like third 'Use Windows XAML platform' approach as most of the users upgrade WP8 to WP8.1.

Approach	Pros & Cons
Keep using Silverlight 7.x/8(Windows Phone 8 platform)	Pros	Will run on Windows Phone 8.1 and also runs on earlier Windows Phone devices
	Cons	No new platform capabilities Will not enable targeting of Windows
Use Silverlight 8.1 (Move Silverlight app into new execution stack and app package)	Pros	Enables to use new APIs and platform capabilities
	Cons	Will not enable targeting of Windows Will not run on Windows Phone 8 devices
Use Windows XAML platform	Pros	Enables targeting of Windows and Windows Phone Takes full advantage of new APIs and platform capabilities Better performance Reduced memory use
	Cons	Will not run on Windows Phone 8 devices