I love compact binoculars, even though conventional wisdom says they are not supposed to perform like their larger cousins. On paper this is true, I suppose, but in actual use, it isn't quite that black and white.
When people quote me the usual tired cliches about exit pupil, objective size and so on I just hand them one of my compacts. One look and the cliches melt away like snow in July. Of course, I hand them premium grade compacts, not the little plastic junkers that proliferate the budget bino market.
My favorite compact is the
Leica Ultravid 10x25 followed very closely by the
Nikon 10x25 Premier LX. Both are razor sharp - sharper than even a good 10x42 and not too far behind the finest 10x42. As for image brightness, they will hold their own with the big stuff until it is dark enough for cars to turn on their lights. In the meantime, I tend to forget I am wearing one of my compacts around my neck, even after hours of use. Can't say that about any 10x42