Yes, thanks indeed. It's really ironic/funny that you posted such data because I was just comparing some files and thinking to myself:
"I see why people have to dig up the numbers and charts all the time. It's really hard to discern which file sounds better to my ears since they sound relatively the same except for a few subtle differences."
In terms of differences you can't see, I suppose each format has their own advantage, though not really Mp3 anymore. Ogg and AAC at low bitrates are significantly smaller than and sound better than MP3, or at least equal to Mp3's at a higher bit rate. That much is for sure. The advantage I see AAC having is that it will reach tons of people who use iTUnes/iPods and it's quality is good at low bitrates. For portable use, low bitrates are very acceptable. We're not talking home systems.
In comparing Ogg and AAC, it has become clear to me, (my ears ) that Ogg files encoded at Q5 (around 160 kbps- I guess Q4 is around 128...but thy're different standards so I think that Q5 is around 128 AAC ?) sound clearer, as the soundstage is noticeably wider..vocals more up front and instruments brighter. It's not a huge difference, but one that assures my steady position.
I should note that I'm using Monsoon PM 9's (2 pair actually) a TB Santa Cruz and for a media player, QCD, which is by far the best sounding media player I've heard out of all the discussed media players for the PC....Free ones anyway. (and no, I don't like foobar, think it sucks in a big way)
Anyway, after having read what you said in conjunction with the information you linked I immediately got rid of the FAAC encoder ! I understand what you're saying about iTunes being the one to use to decide whether or not AAC is for me as well. But using a higher bitrate setting in Nero doesn't sound like a real solution , especially with my Ogg findings. I'm more than satisfied with what I have. If I used a Mac, knowing what I know now, I'd still want an IHP-120 and want to use Ogg. Though the bottom line is that I'd HAVE to use iTunes, becuase out of what there is to use for the Mac, iTunes is the best choice.