I'd like to bump this as I am in the same predicament as the OP, except I've never even looked through good binos. The best I've ever used are vortex fury for reference and the best ones I own costed $80.
I was shopping for an 8x50 or 8x56 binocular, but I'm wondering if it matters after a certain objective for a certain zoom. I want 8's or 10's, but my primary concern is glassing basically in the dark. I like to get to my deer stand extremely early and stay extremely late because I always see deer, I just struggle to ID what they are.
Is it as simple as good glass works better, or does having huge objectives measurably help?
Added: just to clarify, my rifle is unloaded outside of shooting hours. I just like to deer watch on big openings in the dark. I'd buy night vision if I could afford it.