RE: Leopold vs. Zeiss
The Zeiss will be superior in clarity,brightness,ease of focus(diopter bino style not loosening and turning the entire occular eye piece),FOV,reticle color and prominence,W&E adjustments(finger adjustable not coin),eye relief(constant 4" eye relief not one that changes with power adjustments),and finish(less prone to scratching).
The Leupold will be lighter in weight,slightly shorter,and have better resale value.
They will be a wash on warranty,tracking,and holding POI.
Good choosing and shooting!
woods