I'm interested in hearing your comparison of the Turbine vs IE7 once you have the Turbines burnt in.
Just a few quick general comparisons not regarding sound:
1. Size/Fit. The Turbines are much larger than the IE7 in relation to the fit in your ear. The IE7 for me fits flush in my ear, almost fitting like a custom. The Turbines stick out a lot and are much heavier. The Turbines do have the ability to be worn straight down, but for me, wearing it straight down gives a weird fit on my left ear, so I am kinda forced to wear it over my ear.
2. Cables. IE7: Much more flexible without feeling flimsy, virtually no microphonics. Turbine: Stiff in comparison to IE7, but also easier to keep behind my ears for a longer period of time. The IE7 cable seems to be of better built quality, since they are coated with kevlar. For the Turbine, what I'm scared will happen is the same as the PFE I used to have, the cable will start to harden around the ear area and eventually crack, but the cable on the Turbine seems to be nicely made, so it shouldn't have a problem.
3. Isolation. I'm gonna use just the stock silicon tips to make this comparison. The Turbine's tips provide a thicker seal compared to the IE7, so the isolation is better, especially at lower volumes. For me, the Turbines are a better movie watching or strict music listening phone, where the IE7 is a better allrounder because it kinda lets in some outside noise so you at least know what's going on.
That should do for now, at least until I can get a better judgment on the sound.