My buddy has had some IS goggs for a couple yrs now. He likes them, but they're nothing special at all. Flat non-spherical lens and so-so padding. They have some good looking designs, but I wouldn't seriously consider them unless I found an irresistible deal.
16 Gnu Swallow Tail Carver . 16 NS West . 15 NS Snowtrooper BIA
16 Burton Genesis X . 15 Now Drive
16 Flow Talon . 14 Flow Hylite