I used to play Yu-Gi-Oh when I was like 8, but I liked it a lot. Not so much anymore...Gave all my cards to my little bro. I never played Pokemon cards before but I would have to say Yu-Gi-Oh. Now I'm into Bleach!!!
I have like a bigilion of both, pokemon card game sucks though, yu-gi-oh card game is pretty fun and i buy cards every now and then but i never use them, there just a collecting thing now, my freinds and i used to be addicted though.