Which bike should I move up to next?

I have been riding a 2007 ninja 250 for 3 years now. I like the bike but its carbureted and a ***** to warm up. Its also slow so I would like to move to something a bit faster and nicer. I'm 5'4",female, not too crazy about speed, but I want something that sounds loud, and looks nice. I was thinking a honda cbr600 or gsxr 600, or zx6-r,nothing bigger then a 600, thats plenty of power. Which bike should I get next?

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