I love the keyblades, they were one of my fave parts of the first one.

I loved the Oathkeeper, Oblivion, Lionheart, Olympia, 3 wishes, Spellbinder, and Ultima Weapon of course.

I really liked all of them though. Those were just my faves.

It also looks like they have a bunch of new ones in KH2 but they did keep a few from the first game.

I guess those were the most popular ones.