I am in the market getting a binocular. I live in the US. I realized Nikon discounted Monarch 7 and I can get it for $350. The new M7 is close to $500. Is it worth getting the new one? In addition, what do you think about 8x42 vs 10x42? I live in the country side of Connecticut, and we will use it to look at the birds and other animals in our nature.