The 8x42 will give you a wider field of view, but less magnification so you'll have less detail at longer range. The 10x42 will give your a narrower field of view, but greater magnification so you'll get more detail at longer range. It realy depends on where you hunt primarily. If your mostly in thicker cover, shorter distances, then the 8x42 would be the way to go. If your mostly hunting longer distances over open country then the 10x42 would be the way to go. If your trophy hunting then go with the 10x42 for more magnification and detail on making the shoot, don't shoot decision.