rvpiano,
I also wanted to ask if you've seen the videos of "Bolet Encounters Rachmaninoff"? It's basically a master class by Bolet on the Rach 3 with 6 very accomplished pianists, one of whom is Barry Douglass. It originally aired on PBS probably 25 or more years ago. I've always thought that this was the best program I've ever seen about classical music. It actually got to the issue of interpretation and the decisions that are, or should be, before the musicians.
Aside from Bolet's many thoughtful critiques and insights, I've always marvelled at the contrast between his playing of some of the passages and the same passage as played by one of his students. While initially I may have been impressed by the apparent virtuosity of the student, it became apparent almost immediately that the music seemed to be literally pouring out of Bolet's hands when he played. The focus no longer became virtuosity or technique, at least not as I had thought of it up to that time. For me it was a fascinating program. If you haven't seen it, you can look it up on YouTube. Given your background, I'd be very interested in your impressions. Thanks.