OK, so my update for today. I am still impressed with the Turbines. The soundstage is definitely wide, probably more so than the SE530, but not as airy as the TFP10. Different flavors, still deciding if one is better (or should be) than the others.
What I am finding is that, even out of my iPhone 3G (which has a nice headphone amplifier compared to my other iPods), I am getting lost in the music. Maybe it's synergy between me, the Turbines, and the iPhone, but I really like what I am hearing. I'll post more details, but on acoustic music (e.g., Eva Cassidy's Live at Blues Alley/"Autumn Leaves" and Indigo Girls' Rites of Passage/"Galileo" or "Ghost") I just get lost in the music. But I am also hearing details I don't hear on my other IEMs. There are some dishes clanging in the background during the beginning of Autumn Leaves, and they can be heard so clearly (not bad, just ambience of the live recording) on the Turbines, and barely on either the Shures or the UEs.
My wife is a pianist, so I am exposed to large grand pianos and the differences between the major brands (and her preferences for how her instruments sound). I tried "Treat Street", my favorite track from George Winston's Linus and Lucy: The Music of Vince Guaraldi, and this sounds like how a piano should sound (a good recording helps). Maybe the lower registers are a tad warm, but I like the sound. Same good sound with the Shures and UEs, maybe I would term the Turbines more euphoric than accurate, but I enjoy them. Again the balance across the audio spectrum for acoustic (piano, guitar, woodwinds, and violin/cellos) is impressive, giving a nice natural wood sound to these instruments.
Oh, and I tried some Green Day, these reproduce guitar distortion really really well (approaching Grados in this regard). This is fun...