Digital. Better deals, takes less shelf space, easier to find, on more platforms, no worry about scratches or dust, and I don't have to worry about reselling when I'm don't playing. Oh wait. :P
I plan to buy retail as long I can find what I'm looking for with little to no damage at a good/great price but with all the junk I have from all the years that needs to be taken care of the cheaper deal of digital is working out better for me each day.
^ Link above ^ v Video below v