I bought my wife a pair of Costas for $50 off steepncheap...can't remember the style, but retail they would've been $150. I've used it a couple other times too.
I'm with ya, Maui's and Smith Action Optics are the only ones that fit my head comfortably. Plus who wants to buy glasses that will have to be sent back like Costas do?
I wear an 8 3/4 hat size and love my Costas. I wear Harpoons for inshore and Tag for offshore. I also have a pair of Swordfish, Fathoms and Explorers. All of them fit my fat face and big head....try them on at a retailer and see what you think!