Which PC? Prokofiev wrote five. One can only assume you are referring to the over-recorded No.3. Ashkenazy never ever got the measure of this piece. Poor old Andy Previn is my answer, and he should have played it himself. He wouldn't have been worse. Other than that my vote goes to Janis for the 3rd. I am not partial to Argerich at all.
Richter/Rowicki is unbeatable for the 5th PC.
Regards,
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http://www.users.bigpond.com/hallraylily/index.html See You Tamara (Ozzy Osbourne)
Ray, Taree, NSW