Before the purchase I didn't have any other cams in my hand, but I watched a lot of youtube videos. The stabilization is really adorable. Please watch this ..
movie in about 1:42 (when the author turns on steady function):
Watch for example go pro3 and sony as30v. The difference is shocking! The jelly effect is gone! Of course we cannot set the angle to 170 degrees in steady mode.
It's because the stabilization algorithm uses both sides of image to generate steady video, so the record is 120 deg. wide. For me it's even better, it's more like first person view and less like fish person view ;-)
Another steady shot example, also really cool. Most important thing starts from 2:48:
Oh i forgot about brilliant sound system in Sony! Check this comparision SONY VS GO PRO at about 4:10
Movie is about AS100V, but sound is the same in AS30V. In the same movie at 7:20 you can clearly see the difference in image stabilization between go pro and sony.
Here are some specs: