Wow. Not many people actually answering your question. I'd say anything open. Cabela's outfitter, Natural Gear, Predator, Mossy Oak Brush, Advantage Max 1, Seclusion 3d open country. Anything that's not made to make you look like a tree trunk. That said, even the old Real Tree Xtra Brown and Xtra Gray work well out west. Remember, it's not about matching, it's about blending.
Camo is definitely not imperative, but I figure why get my work clothes bloody. Plus, much of it is designed for the temperature conditions and with hunting functionalities so it make sense. Good luck.
WH