I would also add Sonare, Amadeus, Azumi, Trevor James, Sankyo, Altus, Jupiter DiMedici, and Yamaha to your list. And don't limit yourself to just the models you've already listed. Try as many flutes as you can in your price range, and choose what suits you best. You might also consider bringing along a teacher or other professional to help you in your choice.
What you have is a good list. I have a pearl 664 and i love it. I prefer to stay away from the gemienhardt. Umm..emerson is a beautiful brand too. Have you tried them out yet?
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Ooh, take the advice from the other post before me^_^.
