Tapplaces App Icons

This is my first dribbble post which is not about Cloudie for Cloudapp.

I started working on another new app called 'Tapplaces'. It's an app to bookmark your favourite places and nothing else. It's still in the early development stage and I do not know if it will ever make it to the App Store!

I've created four different versions of a potential app icon. Which one would you choose?