As you mention Blue note, Chesky, and Telarc I assume you're taking about mostly Jazz. If so, Concord Jazz has consistenly good sound and artists as well and a lot of Verve (but not all by some margin).
If you're into classical some of the best labels for sound are Hyperion, Harmonia Mundi, Chandos, Delos, Dorian, Reference Recordings, and Telarc. EMI can be excellent as can London/Decca. For Eastern European music, Supraphon and anything with the Czech Phil. :-)
If you're into classical some of the best labels for sound are Hyperion, Harmonia Mundi, Chandos, Delos, Dorian, Reference Recordings, and Telarc. EMI can be excellent as can London/Decca. For Eastern European music, Supraphon and anything with the Czech Phil. :-)