pros of downloading:
- you get to uninstall purchased games and redownload them off the eshop
- you don't get forgeted via possible accidental cartridge tilts
- you don't have to worry about losing your cartridges because there are none
- ULTRA useful if you don't have any nintendo shops in your city
cons of downloading:
- if you have the default 2gb SD card and/or a slow download speed You Are forgeted
to elaborate: pokemon x takes up ~90% of the space and only leaves room for the (stuffty) free youtube app. if you plan on downloading get a better SD card asap.