HTML5 vs Flash: Which would you choose if you could?

[Twiggy]

Let's say that you have the choice to pick between the two. What would you use?

Criteria	HTML5 + CSS + JavaScript	Adobe Flash
Compatibility	Emerging standard supported by modern browsers and many mobile browsers; workarounds exist for older browsers	Time-tested browser plug-in based rich application that has almost perfect computer support, but spotty mobile support; mobile support EOL
Ease of use	Easy to implement for simple tags; advanced apps like games need to have extensive work, has to consider for browser differences	One size fits all, easy to use and program, but limited choice of tools
Performance	Very high across all supporting devices; consistency concerns	Mobile devices may be not up to task for intensive graphics, consistency is very high otherwise
Complexity	Can end up as a mishmash of HTML5, CSS and JavaScript; tag soup may occur if not carefully handled	Everything can be done in a Flash authoring application