Blackbird--are the competitor's initials E and O and the first word has to do with the bird that is the U.S. symbol and the second word is optics? If so, they're a very durable binocular that compares very favorably to a Bushnell Legend or perhaps even a Pentax.
My experience when birding with folks that have the E.O. binoculars is that they have a very sharp center image, minimal chromatic aberration, and great color. Their biggest weakness is in contrast--grays tend to darken and blacks tend to lighten.
They are a well made binocular and typically have good armor and a stiff, but not too-stiff, center focus know.
If you're talking about a different competitor, you'll need to give some hints.
In short, E. O.'s in my experience are on par with Celestron Nobles, Leupold Olympics, and, to my eye, have less color bleed than the Bushnell Legends. I'm speaking of the Platinum Ranger series from E. O. here...