Which for you, as a consumer, is a better mobile OS?

[Chark]

I selected other as I'm going with Vita, but I have limited experience with mobile OS's having only an iPod Touch 4 and an older Blackberry which I really enjoyed at the time, it just wasn't up to par smartphone wise back then. I guess I should have chosen Blackberry? I plan on getting an Android phone soon so my opinion might change, but PS Mobile is launching in two weeks and that inclusion might go over very well depending on how it is implemented in the OS. Without a few updates Vita will start to become rather cluttered. An update to provide folders or internal list of programs inside of an app would do wonders.