pokemon! gotta catch them all! lol. only the original version though, after there was like +500 different pokemon, it got really annoying. horray for the 150 + couple of others! simple times...
Pokemon. Yu-Gi-Oh was about cards that had "magical powers" and could summon monster and stuff, atleast Pokemon is a bit more.. believable (soz for spelling). The Pokemon show was good, until 3rd Gen, and the numerous Legendaries.
Yu-gi-oh doesn't rely on anything but the card game. The video game sucks, the show sucks. The abridged series is actually BETTER than the TV series. So Pokemon by far.