Well, its just your taste as for me for ex. LEICA is far better than any ZEISS as is SVAROSKI too
in ZEISS there is too much lateral deformation, distorsion, if you follow a raptor or a bird flying along a mountain you'll see the trees for example at the corner to deformed any time and blurreing, and your eye get easel tired...
Also, any WORLD binocular show a bit CA and any human eye have different colour view and perception of CA...from this to tell that you are so disappointed from ULtravid HD is very hard...
I think they are just great even if not far more improved then previous Ultravid