Re: What OS is better.
I like when I connect my phone to my macbook pro, music/photos get synced and my contacts, notes, bookmarks get sycned over mobileme. To top it off I didn't have to change anything in my workflow (aperture/itunes/mail.app/contacts.app) for it to work as well as it does.
iOS is just easier to use and I don't have to **** with **** for it to just work. iOS gets my vote, and no i'm not a fanboy.
EDIT: OUT OF THE BOX -> iOS wins. If you want to talk about rooting(custom roms)/jailbreaking take that elsewhere