Best sivir build?

So {{champion:15}} is my fav champ by far. Idk there's just something about her that I LOOOOOOVE. Soo, who has the best build for her? I usually go {{item:3046}}, {{item:3085}}, {{item:3072}}, {{item:3087}}, {{item:3031}} and finally {{item:3280}} . Any tips, or comments? Who has the best build for her. And what runes should I buy?
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