I am not so certain about the befits of faster processors in smartphones. It seems that the law of diminishing returns hits about 1ghz. For fun, play with the Samsung Galaxy S2 1.5ghz and the original 1ghz Galaxy. The S2 has a snappier interface. But it doesn't translate into real performance that makes a difference.
I think starting next year there will be more interest in the GPU of phones and tablets than processors. Since a lot of these experiences are more graphics based than processor based.