I'd like to request recommendations on a sound card that works well with Linux. I'm looking for a high-end sound card suitable for an audiophile (recording, listening, and editing music) and for a gamer. I'd prefer not to go much above $300. I'd like a straight PCI card that doesn't require an add-on card or an external component. (An add-on might be an option for later, but not right now.)
I appreciate any suggestions.