RT, the exit pupil of binoculars will have a significant affect on their usefulness in low light situations. You calculate the EP by dividing the magnification into the objective lens diameter. Keep in mind that the human eye has a maximum ability (in general, for a youthful person in good health) to dilate to about 7mm. That equates to an 8x56 binocular.
NOTE: The big objective glasses are significantly heavier than their smaller cousins. Example, the superb Swarovski SLC in 8x56 weighs just a tad under 3 pounds. My neck hurts just thinking about it, but your mileage may vary.
IMHO, the best value, bar none, in very high quality binoculars right now, is the Pentax DCF WP and new DCF SP series. According to the website link below, the best at any price is the Nikon Venturer LX stuff. But there are several excellent choices, and you might have a look to see what matches your needs: http://www.betterviewdesired.com/
Good luck, whichever you pick, and eat your carrots. [img]images/icons/cool.gif[/img]