Ask HN: Help me to chose a mobile plattform for development

Hi,

I am looking for more information, opinions, strategic analysis on which mobile plattform one should focus his attention and efforts.

While all the hype is around the iPhone and Android, Nokia, BlackBerry and Palm seem viable options as well. Of course it depends what you are planning to do, but let's assume that you want to start a company (a small Italian restaurant to use the words of DHH) working solely on mobile applications, what aspects should one keep in mind when deciding which plattform to develop for?

I am not looking for a definite answer but rather pointers to other sources and your opinions to better understand the current situation.

On which platform are you betting?