For the price point, as you mentioned, I don't doubt they are very good. But if you consider 100 mm ED refractors available on the market, you will find they cost nearly the same price as the GT 100/45°. The GT 100/45° is basically a double 100 mm refractor, with a rather complex system of prisms. So there are necessarily some compromises in quality to maintain a very reasonable cost.
The reviews I have read in various places confirm that there is room for optical improvement. Remember we are talking here about "dream binoculars".
Jean-Charles
I agree that the GT100/45° is not perfect and there is room for improvement. Then again I could say that about any binocular/scope.
I find the GT100/45° excel at what I bought them for....clusters.
I do have a Equinox 120ED (not stopped down to 113 BTW). I don't intend to binoview with it though. Different animal,different purpose.