I have a rifle elk hunt planned for Colorado. I've hunted there before and realize I need a quality pair of optics. The top of the line models are out of my price range, so I've narrowed it down to the following: Windriver Pinnicle, Zeis Conquest, Steiner Predator, and Kahles. I'm looking for anyone who has used or knows anything about these models. Has anyone seen any "reviews" that lean one way or the other? I've tried them all, and they all seem pretty equal except possibly at dawn and dusk. I was also wondering if I should go with 10 or 8 power. Thanks in advance.