Sleuth,
thanks for your input. The high sight-system also botheres me, but I can go for the AUG-Z with a picantinny-rail and mount a low scope. Unfortunately I can't reach the steyr-webiste at the moment - I'd have posted a picture...
Struggling with that decision back and forth, I also came to the conclusion that indoors I'd trust my handgun. Accuracy is well enough and I sure don't have the problem with too different sight/barrel axises. And, it's on my hip 24/7.
But I think I'd still get the Remington or a Benelli autoloader for my wife as a first home-defense gun. So, the next decision, Benelli or Remington....
So, thank you all for your time and thought! Stay safe and sound.