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Well, Fenrir, the keyblade you get by defeating Sephiroth, is the most powerful in terms of pure strength, with 7 Strength and 1 Magic. However, it decreases the amount of attacks in a combo by one. The Ultima Weapon, however, has 6 Strength and 4 Magic, and is probably the better choice, as it also has MP Hastega. - TidusTehSacrificer357 03:06, April 2, 2013 (UTC)

There is also Fatal Crest (won when you complete the last non-paradox cup), who has the highest Magic boost with +6 and a long reach, on par with Ultima and Fenrir but is rather weak on the attack side, with only +3. It also has one great ability, Berserk Charge, allowing infinite combos while charging MP and has quite a high AP cost (5 IIRC). And if we take Final Mix into account, there is also Winner's Proof (won after defeating all Mushroom XIII) that has an outstanding +7 magic boost and a +5 in attack. AkaAxl 16:22, April 3, 2013 (UTC)

Ah, I completely forgot about Fatal Crest :P And I don't have the International version. - TidusTehSacrificer357 01:53, April 5, 2013 (UTC)