Compact and great light gathering ability in the same binos is a tall order , and won't be cheap . At the very least you're talking Swarovski and the other high dollar binos . If you can make a small sacrifice in the compact requirement you'll end up with a lot more choices . A medium to large objective lens and fully multi coated lenses will drink in plenty of light without much loss from glare and distortion and you can find them in affordable models .