I have both the Bushnell Custom Compact 7x26 and the Vortex Viper 6x32.
I've used the Custom Compacts since the early 80's.
Sharp and clear, much better than you'd think from a small pair of binos. They are very easy to use and carry. A real plus, cause you always have them with you. You will however, give up the first and last half hour of light as they just don't transmit the light as a larger pair will.
Started using the Vortex Vipers last year and am very impressed with them. Very sharp and clear and great low light binos. They are larger than the Custom Compacts and I use them with a bino harness. The Custom Compacts always ride in a coat pocket when I use them.
I have to say that my old stand-by Custom Compacts don't get used so much now that I have the Vortex. They are bigger, however, the great low light performance gives them the edge in my opinion.
These are the binos I use for Whitetail and turkey hunting. When I hunt out west, I use a pair of 8x30 Swaros or 10x40 Swaros and am very happy with them as well.
Kind of a bino junkie lately and liking it.