Ditto on the bino's as a must have when bowhunting.
As was said above, a good quality set of bino's are a huge plus when you are out there. What David said is exactly right....and he probably has the best pair money can buy. An exit pupil of 5-6mm is prefered to have the best advantage over all. Anything over that doesn't really add much because the eye doesn't really open up more than that. Anything under that, you will suffer some during lower light. Quality will obviously make a difference also.
Personally I use a set of 8x25 Nikon compacts. Sure, I don't have all the advantages at first and last light as the bigger sizes, however they are extremely clear, and can pick apart the brush very well. (yes david, they are not as good as yours...but imo they work very well) Plus they are smaller and lightweight, a plus in my book....I've usually got enough crap with me when I'm out there.
I have used my friends 8x42 swarovski's and they are incredible. However, for the extra $600+, I don't feel that I gain that much during daylight hours. Lowlight...yep, no doubt. I can honestly say that even though mine suffer some during low light, they have worked for me for years very well, and even though they are smaller, they have never let me down, or cost me an opportunity. For bowhunting, IMO they do all I need. The majority of the spots I hunt, I can't even see 100yds anyhow. Now if I was hunting out west, or in different terrain, that would be different. I'd probably opt for some 7x42's or simitlar.
The main thing is, regardless of what size you choose, get a good quality optic. A cheap optic is just that...doesn't matter what size.
VAboy....my buddy has a pair of Leupold gold rings, and swear's by them. They are very clear, but I have never used them...other then just to look through them. I'm sure they will do very well.