The Blade of Chaos is a great weapon, I've gotten both the Noble Amulet and the Noble Sword (not in the same game you silly!) and both were great, but in that one game of mine the Blade of Chaos was the best weapon I found. Sometimes early in the game Geoff in Rivertown has a great Bastard sword that you can buy (I had to sell almost everything to get it once, but worth it).
Yeah, the "Polished Bastard Sword of the Vampire" is one of the best early swords (mine does poison, frost and life drain)...I'm using it quite heavily in the Ionas Dungeon level; my Singing Sword is more powerful but lacks frost so I'll generally use the vampire blade against multiple opponents.