Apple is not sleeping you know (unlike MS)? http://www.macobserver.com/tmo/article/apples_sells_out_wwdc_2011_on_first_day/?utm_campaign=feature So my bet would be: 1. Apple with all sorts of users - cause it's so easy to use and you have everything you need! Plus the the new iOS and the cloud base storage. 2. Android with some techie users who want to experiment - a bit limited market share i guess. But can still can dominate the market as anyone (manufacturers) can use android OS. 3. Blackberry - focusing mainly on Enterprise. 4. Windows - already out of touch with the mobile market but still has potential. This is my opinion.