Pokémon overall.
I was between 8-10 when the Pokémon fad was in full swing (1999-2001), loved both the games and TV show, along with the movies and merchandise. Haven't played any of the new games in years, but I still love the Kanto/Johto games.
I could never really get into Digimon back in the day (came on TV over my way when I was 10), despite my best efforts, and have never really had the incentive to re-visit it, unlike Pokémon.
I was about the same age range and I waged war on the franchise and despised. I got into anime in 2005 with the 2003 Fullmetal Alchmist reruns on Adult Swim. Recently, I have dropped my negative outlook and have begun to watch episodes of the Pokémon either to confirm my previous negative opinion or see if I was missing out on something good.