Which Audio Streams to keep?

Just curious. Which audio streams should I keep for my back-up and does it make a difference. DTS vs AC3 Usually I can make a stripped 100% backup if I delete one of those two streams. Is one better than the other? Is it dependent on whether you have a surround sound system??


DTS is supposed to provide better audio, but you must have a DTS decoder in the preamp/receiver. AC 3/6 will work with 2 ch stereo, analog dolby pro logic, and digital dolby. I only select the English AC 3/6. Some older DVD discs will carry AC 3/2.

Keep the AC3 stream, it is mandatory for all players (while DTS isn’t).