I agree. I like how conductors or musicians play around with the music. I don't have problems with Perahia overall. Just listened to the 2 disc set from the box of Schubert, which sounded really fine. If I was so dogmatic about classical I would miss out on a lot of some good music -- Scherchen can drive the purists crazy with his zany takes, but there's heart and passion to it. Perahia is a different flavor, but I never found him to be boring.
Getting back to the theme of this thread:
http://www.amazon.com/exec/obidos/ASIN/%20B00FP45TT8/?tag=goodmusicguideco
The Tchaikovsky Box on Brilliant.
http://www.amazon.co.jp/Complete-Works-B-Britten/dp/B00CJCHJ1U
The Complete Britten on Decca.
And, Gould on TV:
http://www.amazon.com/gp/product/B005D4Y4H8/ref=as_li_tl?ie=UTF8&camp=1789&creative=390957&creativeASIN=B005D4Y4H8&linkCode=as2&tag=bonsplanscl06-20&linkId=AUYYL47QWDBOS4P5