Have been an apple user since iPhone 3, today I got my very first android tablet. First impression android is less organised than iPhone os, you have to look different places from sketch and feel uncertain.
Also, have a feeling the development is less maturer and less professional. Android market is like a contribution of a group of amateurs who share different sort of apps in the market but you can never find the one really suits you perfectly. Having said that, it means it will give you more flexible and dynamic environment to experience and modify.