Oh gah, people are going to hate me for this, but I ENJOYED both version of Chain of Memories more than KH 1 and 2. I'm just into heavy customization of your arsenal, I've built a totally spell deck, I've built the infinite key combo deck, I've built the deck that only has healing (it sucks), I've built the Disney characters deck, I've built the Riku wannabe deck, etc.
Meantime, KH 1 and 2 are really, really two button mashers no matter how I look at it.