|BaByliss (l), BioSilk (r) - You can't really tell|
from the photo, but the BaByliss iron is
a little thinner and a lighter weight.
Since I had extensions in 90% of my hair at the time of purchase, I used the flat iron on my friend Andrea. her hair has a natural wave and is dry and damaged at the ends. I think the results are pretty nifty. You can't tell after styling.
Below are a couple of photos of Andrea from when I styled her hair using the BaByliss iron. They're cell phoine pics in crappy lighting, but the purikura post I did a little while back shows her hair in better light with my real camera (Canon 40D).