DTS vs Dolby Digital?

GENERALLY, DTS sounds a little cleaner because its transfer rate is about double (or better) than DD's. IOW, the DTS track is compressed significantly less.

The 2 also sound different because they're mastered differently, that is, by different people.
.

Dolby Digital is REQUIRED by the DVD-V format, while DTS is strictly optional. I think Universal uses it more often than other studios. Also, DTS is used only when the original audio material is in at least 5 channels; you'll never see DTS used on a DVD with, for instance, only a 3-channel Dolby Surround track.

I expect Netflix issues the same original discs that we can buy or rent; they just don't pay attention to whether a disc includes a DTS track. Simply cycle thru the Audio options when the movie starts to see if DTS is there.

I agree with Flemingjrd--DTS sounds better.
.