Tsk, tsk . . . I haven't really made comparisons yet. Not sure I can extract performance/interpretation from production/sound quality, so as always in this thread, please adjust your grain of salt accordingly. From someone who only several years ago had a couple discs of the warhorse sonatas, I now own close to ten complete cycles! It's hard to decline the deals being offered on eBay. $15 shipped? Okay. $10 shipped? Even better! So my choice so far for performance? Serkin/Columbia Sony . . . not complete, though. And here I run into the "problem" of first impressions being forever the standard. I'm pretty sure my first Beethoven LP forty years ago was a double record sampler featuring, among other Columbia performers, Serkin's take on the sonatas. So his always sound "right" to my ears . . . Sonics? Jando/Naxos. My system really likes this cycle. Good percussive "attack" without being too dry.