Sony's Qriocity streaming music service compared to Zune Pass & others

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Is Sony's Qriocity service any good?
I've seen Zune Pass and it's pretty good considering with an annual Zune Pass you will own 120 songs at the end of the year.
Let's discuss audio-only not video).

Qriocity (pronounced as curiosity)

Sony streaming music, games, e-books and video[2] on demand services.

has been available in the US since April 2010. Sony plan to expand the service into European markets

http://en.wikipedia.org/wiki/Qriocity

and what about Audiobox.fm ?
$10./month = 151GB storage to stream.
http://thenextweb.com/apps/2010/05/1...ublisher-other