I have a pair of the older Custom Compacts, made in the late 70's early 80's. They were my go-to binocular for years. Always had them in a pocket while hunting.They do give up the early and late half hour of the day.
I now have a pair of Vortex Viper 6x32's and there is no comparison. The Vipers are far and away for me,a brighter, clearer pair of binocular in low light conditions. They are not so small and compact as the Bushnells, however, they are so much brighter and clearer, it's what I'll be using for anywhere I'm whitetail / turkey hunting. I like them so much I have a pair of Vortex Viper 8x42 HD's on order now.