There has not been enough evidence with double-blind testing showing that 24bit is objectively distingishable from 16bit. But of course, everyone is entitled to their subjective opinion, and if you enjoy 24bit more than 16bit, no one is stopping you. Note that many companies do a better mastering job with their high definition version of the same recording.
This thread is great, not sure if you have read it. The OP states the there is no difference between 16bit and 24bit in theory, the extra headroom you talked about from 24bit is only useful for recording purposes, not for listening. It's been extensively discussed there already.
I did read that thread, very interesting read indeed.
In regard to the post, it was mainly meant to point the differences of 44.1 to 48 or 96KHz audio, and since many 96KHz content is also 24bits, I just added that. I wish I could remember which thread was it where Dan Lavry wrote an interesting insight on the ideal sample rate, which is somewhere between 48 and 96KHz, though closer to 96KHz. And that goes around what I was saying, the point being that if having the option, going for 96KHz content/hardware would be preferrable than 48, or 44.1 for that matter.