Too soon to know.
Since the SD400 is not being sold yet, there is no first hand information available. And I have not seen any reviews.
Amazon shows the SD400 will start shipping on March 25.
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I had the t1 but I returned it because it was faulty. I am not sure if I should buy the t1 again or the sd400. I really like the fact that you can use digital zoom in the movies on the SD400.(and it uses SD!)
I am not 100% sure on which is better so I need your help. If you have any suggestions please post.

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