I have used, Leupold, Zeiss, Khales, Swarovski, Nikon, Burris, and Bushnell scopes, from high end models to low end stuff on occasion. Every single brand has failed on me at one point, sometimes I was on a hunt, sometimes I was just out shooting.

One thing you can guarantee is, that if you use schit, you'll break schit.

I started using Leupold almost exclusively because they give me the least amount of grief when I send my broken schit back in to get fixed.