I remember Chris saying that he didn't really like SOTN compared to the original Castlevania, felt overwhelmed by the map, that he preffered classicvanias etc. I think it'd be nice if they decided to play through Aria of Sorrow since that's the shortest one, and also one of the best in terms of gameplay. Then again, it seems that bringing Cory on for a series increases it's chance of getting finished by 303%, and they played Rondo through the Requiem release, so they might aswell play through Symphony.