Technique...to me, Pileatus has nailed it! :t:
There is no brand, power, size, weight or style of binocular that if I use my grip on the barrels, I can maintain a steady optical image. I almost immediately start seeing hand tremble, my heart beat or even my breathing that detracts or even destroys image sharpness and resolution.
For me, gripping the barrels with finger tips, not the whole hand, gives a steadier, floating image that allows details to come through. This resembles mechanical stabilization, much like current SLR stabilized lenses (that I didn't have in a prior life)!
Shooting techniques, like controlled breathing, relaxation and target focus also help assist me in glassing smoothly for long periods with non-stabilized 10X on up to 15X.
IS camera lenses are heavy, so are IS binoculars. Get the power and resolution you want with non electronic optics, just relax and Enjoy the View. My opinion...YMMV!
Ted