I've just realized that we may be discussing two different things (well, a bit different)
I am not saying that I can tell apart between 16 bit depth audio sound and 24 bit depth audio in general. I've been stating that I get better result when recording with 24 bit depth, when I rip vinyls, and that fact alone is convincing enough for me to use 24 bit sample when it is available. And I test it with my old M-Audio Quattro, so if I compared it with DAT deck, it is quite possible that DAT deck might sound better, because I've been hearing that DAT sounds good (it is not only about bit rate and bit depth).
I record in 24 bit depth, instead of 16 bit depth, because recording in 24 bit depth provide me better result (it was clearly better), which I tested with my equipment many times.
When I convert that 24 bit audio file to a 16 bit audio file on my computer, those two audio files doesn't sound that different (this is what I meant by I get better result by recording audio in 24 bit.)
I enjoy CDs, which are obviously in 16 bit / 44.1KHz audio format (but I've also heard that mastering audio CD is not easy job, to make sound more "organic", less "digital".)
But if don't record from analog source, say, from vinyls, guitar, mic, analog synth (or any audio source that require to use A/D converter) maybe this is not relevant to you.
I don't know if I can tell apart between properly mastered 24 bit audio file and 16 bit audio file. But for other reasons, I think it is totally better off to use 24 bit audio recording option when you can use it.
This is a quote from the same person you quoted (from the same thread, Page 2);
...
If transferring a vinyl to digital, there may be some merit in using 24bit, for the same reason as using 24bit when recording in a studio. 24bit gives you tons of headroom as usually you try to set peak levels in 24bit to -18dB (-22dB is also a good peak level). This gives you plenty of space for any transient 'overs' which you might get using 16bit. You can always dither back down to 16bit when you're done or leave it at 24bit if storage space is not an issue.
optik415 wrote:DAM! Look what i started LOL.EFF That,im going back to 4-tracks and strickly tape FLUCK COMPUTERS.
LOL!
I don't miss cassette tapes much (other than nostalgic reasons), but open reel tapes sound great!
I think recording with digital format is great, but with digital format, signal never degrade gracefully, like tapes.