I would rank them Swarovision 1st, EDG 2nd and Zeiss FL third. If she want's the best 10x I would recommend the 10x32, 10x42 or 10x50 Swarovision. The bigger apertures will be better optically is she can handle the weight.
I suspect you are correct here without having ever looked in them myself.
What exactly do you mean by bigger apertures are better optically? I didn't realize this.
What do you think of this guy? (for me maybe)
Beneath the civilized veneer, man remains the supreme predator. Cursed with what he believes is understanding, his true soul blossoms godlike in the heart of the nuclear inferno.