Just got a Vizio sound bar - it can connect to the TV via HDMI ARC, which is convenient. I then connected a Blu-Ray (a PS3) to the TV via HDMI, with no separate audio out connection from the PS3 (because the HDMI ARC delivers the audio to the sound bar) HOWEVER....in doing this, I lose the ability to output Dolby DTS from the PS3 to the sound bar - you need to use a separate optical/digital connection for that. There is surround audio, but it is not specifically DTS anymore (the bar has an LED indicator that specifies if the sound source is DTS vs. other types of signals, if that makes sense). SO HERE'S THE QUESTION: should I bother with the optical/digital audio connection from PS3 to sound bar just for the sake of preserving DTS, or is the audio I'm getting via HDMI ARC as good (or better)? In other words, am I losing anything by not getting specifically DTS audio? Thanks!