My dh and I used the closed ctnaiops all the time. We’re either getting hard of hearing or the sound on a lot of the dvds these days just isn’t up to par, imho. It seems like a lot of the actors either swallow their words or mumble, incoherently. That with a noisy soundtrack and we find ourselves backtracking to re-listen to what we missed. So, when they ctnaiops are available, they’re turned on! This has been invaluable while watching Deadwood, which has extremely fast-paced Shakespearean-style dialogue. Oh, and we still keep the audio on.