I am thinking about upgrading my binoculars, and have seen some Minox HG's 8.5x43's & 10x43's reduced to just over £400. I currently have a pair of Opticron 8x42's. I struggle to get a good image at longer range, which makes it harder to judge head quality etc. I'm leaning towards 10x magnification, but is 8.5x likely to be noticably better in low light? Most of my stalking is roe on open ground, although I do a bit of hill stalking from time to time.