I don't know why anyone would EVER choose the charmed ones. I mean, come on. Have the Charmed ones ever went toe to toe with a Hell God and got the best of her at the end? No. But Willow has. And let's not foreget how Willow tapped into and totally minipulated the powers of being to change the destiney of all potential Slayers. Have the Charmed ones ever tapped into the powers of being? No. Willow would flay them and have their skins on coat hangers be fore they could even mutter a word. Trust me, Willow's on her way to becoming a godess herself.