I can't tell you how the Doctor 8X42's will do compared to the ones you've already tried. But I can tell you that there are lots of things to consider when looking for binocular.
I own eight binoculars for hunting. Everything from the cheap $100 or less Leupold Yosemite to an expensive 12X50 Leica. All of them have their uses. What surprised me was how different they perform in the field. I have, for instance, two 6x's and one 6.5X. You'd think they'd be so similar, I might as well pick one and sell the rest. Not so. Same thing with the three 8X binoculars I have. None are for sale.
If you are really interested in a particular binocular, I suggest you find a dealer that will sell you one with a guarantee of a full refund if you aren't satisfied. I know Doug at Cameraland and Cabela's will do this because I've done just that.
You are the one that must weigh the pros and cons. Not me.
Unlike rifle scopes, we can do this sort of thing with binoculars and I suggest you do. E
