So you would have to admit that without having experience GT5

's LPCM feed you are simply speculating about exactly what it sounds like in comparison to the stereo feed.Scaff
I admit it, but I still maintain my view on grounds that we're talking about different perception here, I know it does sound better(clearer) through that system, but the character of the sounds(due to recording technique and audio engine)IS the same and others who have this kind of systems have said so also. And that ties us neatly to your next question.
Why exactly are two sets of sample not an option?
While its unlikely its can't be ruled out completely, after all it is quite commonplace in some BR releases, the very one I mentioned has a totally separate Dolby Digital and LPCM track. They are totally different and one is very, very good (the LPCM); while the other is very poor (the Dolby Digital).
Firstly, I'm basically going to agree on something you've said before and that is economy. I just don't see it as viable to have two sets of samples for ALL the sounds, including probably over 1000 car sounds!

The other thing brings us back to the basics, and that is recording technique, which to support your claim of the "HD" feed being not just of higher resolution, but different in character too, would have to mean that PD uses 2 techniques, proper one for HD and quick'n'dirty one for SD(like stereo feed) and that my friend seems really, really unlikely at best! Also, just few people had come out and said that the HD audio is totally different and that much better, so I'm inclined to believe the majority of people who recognize that the sound is obviously better on high end surround system, but it's still the "same" sound.
Once again I would add that I personally believe that a lot of the sounds in GT5

(while they are clearly better than in GT4 - so we are headed in the right direction) still need a hell of a lot of work. That does not however mean that anyone who says it sounds better through a good 5.1/7.1 system is wrong.
We agree on this point.
Just as a good system will highlight the flaws of a poor recording, a poor system will make a good recording sound rubbish. My sub will get down to 27hz and some soundtracks (be that games/films/tv) will be able to make use of that and it sounds great, however throw that at a TVs built in speakers and all they will do is buzz unpleasantly.
Your point works both ways you see.
I'm not sure you carried that point quite home, because no one really plays the game on, say one of those tiny mobile phone speakers, so those are just nuances you're talking about, also I'd hate to sound like a parrot, but nfs shift as an example of believable/realistic(in the sense you instantly know just by sound what car you're driving) audio really does sound good,recognizable and exciting even on crappiest of speakers on laptops for example, without even mentioning good TV sets, or hi-fis...and in the end, to make your own point, yes, shift sounds best on a really good surround system, but that doesn't prevent me from enjoying it on a crappy 10$ headset!!

There are no excuses I'm afraid...but I also hope, no one will have to come up with one after GT5 is released!
To me, it is infinitely more important than graphics.
Infinitely is a bit strong, specially cuz I consider myself a graphics whore

, but yeah, I can tell you as a practical example that in the end, I always choose impreza over lancer,just because impreza sounds awesome and lancer, well doesn't. And I make that choice even with the last generations, in which the impreza looks like a 10 year old daewoo and in spite lancer looking better than ever! Sound IS important!👍