Jake,
Welcome to OT first off. Second, the problem with variable binoculars goes further than what you described. The big problem is sheer physical unreliability. This is due to the inherent dssign of the infinitely variable approach. There is simply no way to make a solid zoom binocular.
I'd cruise the net and look for a used Leupold GR Switch power binocular. The idea if two fixed power settings which will more or less lock into place are far more reliable than zoom.
With poor uncorrected vision to begin with I can see no way you would be happy with a zoom. Even with good eyes, a zoom converts normal 20/20 eyesight to poor uncorrected vision.
I think you will bew far better off finding a good fixed 8x-10x binocular with enough eye relief for your glasses and just use that.
I would read this and pay heed. Variables are of limited use with good eye sight, fresh out of the box, before thery have had a chance to go to pot.
If you are determined to go the zoom route I would suppose the Minox is the best of a poor lot.