Any recommendations or reviews of either Alubox or Zarges? Any other good metal rooftop boxes to consider?

Also why aren’t there any rooftop boxes that have hooks or holes to facilitate mounting them on a roof rack? Seems like everything needs to be drilled or needs a proprietary mounting bracket. Why not just have some feet with holes drilled in them on the outside of the box, or some threaded holes on the side of the box to screw a bracket to?