For me, it also matters a lot how difficult it is to write an app that runs well and looks good on every device, irrespective of screen size and resolution, har

For me, it also matters a lot how difficult it is to write an app that runs well and looks good on every device, irrespective of screen size and resolution, hardware buttons, etc. Having done plenty of web design, and a little Mobile Java, the pain of getting things right for a sensibly large proportion of browsers/devices is something that I love that iPhone development lacks. I haven't tried any Android development, but I can't help but believe the situation must be somewhat worse.