Hello! I've decided to increase my budget a bit for a new pair of Binoculars. I currently own a pair of 8x42 Celestron Nature DX binoculars. They have served me well, but I figured it's time to upgrade. Do any of you have any recommendations in the $300-$500 range? I'm looking for a pair of 8x42 binoculars. I've been looking at the Nikon Monarch 7, Vortex Viper HD, and Kowa BD II. What are your opinions on them? Are there any others I should check out?