Virtual console is the obvious choice, Mainly because you don't have to waste more then what the game is worth compared to the games you can buy at a used game store. And you can get imports without getting all the third party accessories needed to play them.
The only real downside is that not every game is out on the wii, but that's considerably minor if you don't know every game that was released.
The only real downside is that not every game is out on the wii, but that's considerably minor if you don't know every game that was released.