I am a beginner (i.e. can't play a note)and am investing in a Petrof IV. I am wondering if the dealer-installed player systems are helpful in terms of learning/teaching, etc.

I have been told that the PianoDisc is the better of these, but there are many opinions. I know that the Disklavier only comes on the Yamaha products (correct?) and I had another dealer recommend the QRS system.

Can anyone tell me the pros and cons of the various players and the advantages of having them beyond having the piano play itself until the new owner learns how? \:D

Don't want to add this rather pricey option unless it has true advantages.

Thank you, in advance, for your opinions and perspectives on this subject.
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Heidi