Personally I like TI's OMAP4440 dual core ARM Cortex-A9's clocked at over 1ghz. You want fast for netbooks and phones? This is the next one. Who wants to start a rumor of Nokia using this in the next wave of Maemo devices? :P

And as for the question netbooks or phones.. Honestly I think this will spawn a new idea.. Phones that plug into bases and become linux powered nettops. With a typical KDE or Gnome interface made for a mouse and keyboard.

Imagine sticking your work laptop in your pocket and when you get on the metro emailing the report you just finished before leaving work over the 4G internets, and then replying to everyone's responses to the report on a full monitor and keyboard once you got home. I think that would be AWESOME

Then again the OMAP4440 is also more then capable of 1080p decoding/encoding, you could just use it for recording/editing/playing a lot of movies :P

And the PowerVR 540 chip it uses is also really powerful for ARM based gaming, perhaps it'll work for something a little closer to crysis... Then again that is *really* getting ahead of myself... Nice dream though..