More important for the type of use you're going to be doing is to get more light rather than more power. In poor lighting (in the woods) it's going to be critical to get more light on the subject to see lines than to get more magnification. The human eye can dialate to 7mm so you want an objective lense in a multiple of about 7x's the magnification for maximum light gathering ie.) 8x56 or 7x49. 10x70's would be awesome but you aren't going to carry them around your neck for long! Glass is one place in the world where you definitely get what you pay for. I wouldn't waste my money on anything less than $800 but I might spend upward of literally 8 hours in a 16 hour day of brown bear hunting looking through them. I love my Leupold Golden Rings but for what you're using them for you would probably be more than happy with the Wind Rivers in the $300-400 price range.

I'm a HUGE fan of Leupold and the fact that they have a lifetime, no questions asked warranty and are in the US. I've sent my binos in for a full tear down and rebuild after they spent a night in the saltwater and had them back 10 days later like new. I found a 1-4 vari-II scope in a river and sent it in for a full tear down and lense replacement and had it back in 3 weeks like new and it only cost me the price of the lenses (about $80). My friend sent his Swaro's back to Austria to have them realigned and didn't see them again for 8 months!