Replying to Goggles

So I tried some Oakley goggles (Fall Lines and Flight Decks) yesterday at the shop I work at, and I really liked the huge field of vision on the Flight Decks, so I looked up the different goggles on the Oakley site to see what other goggles they have. Thing is, I have no idea how to make sense of the nuances of goggles. What difference does the frame shape of the goggle actually make? Most average sized goggles seem to have an average sized field of vision, but is there any real reason to go with something with a smaller field of vision? The Fall Lines had a far more restrictive FOV and I just wonder what reason there is to buy them, since I couldn't notice any positive tradeoffs.

What other goggles have a really big FOV and maybe some other nice features?