I'd like to share with you interesting approach allowing you to create vector assets in FXG format and generate textures with right size for specific device on the fly during loading application. Using this approach you can achieve the same good quality on all mobile devices (even with retina display).
You can read more on our blog.
Vector textures in FXG format with Starling framework. Multi-resolution development. Part 1 - http://www.in4ray.com/2012/12/starling-vector-textures.html
Vector textures in FXG format with Starling framework. Multi-resolution development. Part 2 with example - http://in4ray.blogspot.com/2012/12/starling-vector-textures-part-2.htm l
Optimized FXG graphics in Adobe Illustrato - http://in4ray.blogspot.com/2012/12/starling-vector-textures.html
Appreciate you feedback and comments.