Pandora vs. Pandora One. Any audible difference?


Has anybody upgraded and can comment on the sonic benefits of Pandora One versus the free Pandora?
Thanks.
umn
If any Pandora users didn't know already, the Pandora iPhone app is free, and works great over 3G, and even pretty well over EDGE.

So if your iPhone is hooked into your car system, you can access all your Pandora stations in your car, and play though your car stereo. I think it is pretty cool.

dave