With Samsung introducing its own Music Hub Premium service today, we have to wonder how all these services stack up against one another. Samsung Music Hub Premium will debut on the Samsung Galaxy S III and offer 100GB of cloud storage for unmatched songs, unlimited music streaming and scan-to-match for you library for a monthly subscription.But how well does this service compare to iTunes, Google Music and Zune not to mention several other music services available today? Check out our comparison which follows: