Best keypad-less phone?

Q&A

Can you please suggest to me the best mobile phone which meets the following features...

1. Four-plus megapixel camera
2. Stereophonic Music with surround sound
3. 2.8in-plus screen with 262,144 colours - touch control optional
4. External memory card support up to 4GB
5. No keypad - may be slider

Thanks.

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