I've played YGOPRO for a few days and its pretty fun the only bad thing is that there aren't as many players playing it compared to DN therefore finding a duel isnt as quick as it is in DN that's about it.

Im still gonna play DN when I really feel like dueling someone random but with friends I highly suggest using YGOPRO

I guess Imma edit the OP with a list of users for both DN and YGOPRO

@purangel which game is that username for ?