I've been using Xcode on my Mac Mini for a few months with large app storyboards etc. To do this, I need to constantly zoom in/out of the document to see what I need to.
I've increased the size of my monitor to a 24-inch display, but I still find myself needing to zoom a lot.
So, what Apple mouse or trackpad (Mighty Mouse? Magic Trackpad?) will help me zoom and navigate fastest in Xcode and Photoshop?