In the end it is all about which features you can live without in your game. As far as Mac publishing is concerned, if you are an Indie who can afford only the Indie version, Unity making a Mac exe isn't really a bonus since you can't really test it 24/7 yourself for bugs and all (if you don't own a Mac). Also, good luck finding a publisher that will finance a Indie dev (so that you can purchase the Pro version)..

The editor on Unity is really good though. It really makes your life easy compared to 3dgs editor. Interface is clean and customizable (you can add/remove a lot of tabs).