[rizwan]

Something to consider: Xcode's UI, particularly for editing Interface Builder stuff, really benefits from a larger screen.

On a smaller screen (13" or 11"), you'll find yourself constantly toggling panels on/off so that you can see what you're working on.

[askar]

I clearly get what you meant, been there and toggled panels enough to get away with it. I'm counting on the retina display and higher resolution to get around a portion of this overhead.