I'm going full frontal. I thought about all digital on Wii U for the 10% discount but I like having physical copies. I like opening the case, I like having a physical collection. And I like knowing that I have these games forever. My family still plays my old SNES, and my nephew picked up a used SNES and was able to borrow all the games. Those things are like 20 years old.
The good thing about digital is the ease of swapping. I play brief periods of BLOPS2 after other games, so I wouldn't mind being able to tap the icon and start it from the couch, then go back to whatever other game I was playing. But I guess that just makes me really lazy for not wanting to walk to the entertainment shelf.