I was noticing while listening to Pandora that a remarkable number of their classical and baroque recordings are quite nice. Yet whenever I search for a similar album on Amazon.com mp3, their previews sound just terrible. It's not compression, but rather very poor recording.
Any suggestions from experienced classical guys on finding good classical recordings, and sifting through the loads of bad or "vintage" recordings?
Edit: I just realized that one way is to click the "Buy from amazon" from Pandora, which brings me to the correct well-recorded album.