I tried both of them and had them literally one on top of the other while out on the water. (I shoulda taken a pic of how it would look when looking out of both of them.)
You guys were right, I liked the 180 Vision. That's the one I'll keep.
It definitely has more panoramic landscape to it. The extreme is cool and very clear, but I liked the extra field of view. Plus not having to fiddle with the sides is better.
The look of the Vision is VERY similar to watching a go-pro video.
I only snapped a couple shots. This one was while driving back at about 30 mph.
Here is one that my buddy snapped of me while I was surfing: