Up the number to make the consumers think there is something new. For most they won't get too badly burned. Ever wonder why Sandisk, Apple and the names don't use MP4/5/6/7/8 in their advertising?
I got a "MP5 Player" from a MP5 Player Wholesale website. Totally they call the gadget MP5 Player, buy why? Its no more than a MP4 Player.

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