Zelda all the way. I've always preferred dungeoning to kill a boss with awesome swords and items and there's actually a story to it. Mario's just kinda....well Bowser takes Peach, Mario kick Bowser's tail out the door, Mario save Peach, the end..... repetitive.
zelda all the way being able to get rupees heart pieces and having a big area to explore liek dungeons and hard puzzles is much better then jumping over turtles to reach a mushroom although i am still a fan of the mario games
Zelda, but Mario has had some nice games too like Super Mario World and Super Mario Galaxy 2. Although, I am a bit more of a Zelda fan. The music is so great, and the story is awesome!