In the long term, you often have to aim where the market is going to be, even at the expense of where it is now. I believe this reasoning favors HTML5. Consid

In the long term, you often have to aim where the market is going to be, even at the expense of where it is now. I believe this reasoning favors HTML5. Consider using a library such as Sproutcore to develop an HTML5 app with desktop look and feel.