Agree completely. For 20 years I played through memorization and could learn a new song pretty quickly. In the last few years I've started using apps (like a Guitar Hero style) and it feels like I'm learning the songs, but I can't hardly play them without the screen. Even though it's funner using the screen, I'm going back to just memorizing.
It's like GPS, even if you know the roads you'll look at the GPS once you make that habit. I think for learning songs memorization is much better once you can do it.
