I'm also big on performance and interpretation of classical music. I've compromised my quality standards on every genre of music except classical music, which I still revert back to my CD collection. Sadly, I feel classical's aging audience hasn't created the forcing function for that industry to get organized regarding the categorization and distribution of their catalogue online, which is a damn shame. Having said that, it takes a certain tuned ear to pick out the world of difference in the performance and interpretation between pieces that are compositionally identical. I personally feel you need a certain threshold of fidelity to distinguish those subtleties.

Because of this, I find I listen to less and less classical music over the years, simple because CD device players are starting to disappear from my life. For example, I'm typing on a laptop right now that doesn't even have a CD drive (Macbook Air). I literally have to go out of my way to listen to classical music in the way I want to hear it. It's sort of sad, really.