See, I thought Balenciaga Editions myself but when I went to balenciaga.com I noticed the Editions don't come in brown/tortoise. And the frames are ever so slightly different.
I have had that exact same thought. Ive ordered about 4 pair of sunnies online that Ive seen here. One day it occurred to me that I may be disappointed with how they look IRL. And the bad part is its just a matter of being lazy, because there isn't a brand around i cant find locally, yet I continue to google the brands/ styles and order them up.
I think if the frames are large/ oversized you'll do well in general. because they cover so much of your face. Its smaller frames that can be a challenge. I have a full face, and smaller frames can look like some free toy in the McDonalds happy meal if im not careful