Thanks, I'm just kinda bored at work. (So, I guess, in a way I am being paid
The one you're looking at has Xenons. Since it has Nav, it actually has Sound II, which is a 375-watt amplifier versus the 300-watt unit in Sound I (what I have).
In '04, most options were a'la carte, but that changed for '05, when they started doing packages (which I personally can't stand, but whatever...)
The air suspension and 4-zone are not a biggie. Honestly, I don't have either, and am perfectly happy. I would like the air suspension personally, but it's not a thorough deal breaker for most folks. I will say if you have any intentions of off-roading the Touareg, go for the air. While the steel performs admirably, the air gives you a greater margin for error underneath plus a better ride when in the rocks.
Matt