Looking at pictures of the Bobro is deceptive.
When you get it in your hands, you'll see the scale of it.
I'm used to lesser mounts. I've seen some Larue, ADM, Burris and Warne mounts. I've never been too impressed. When I got my KDG, I was impressed, the rings are beefy and can be mover to fit your scope, with close fitting locating pins and large fasteners. Later when I got my Bobro I was impressed again, it's every bit as beefy as the KDG and kicks up the quality another notch.
I have full confidence in my Bobro, my KDG is about 98%. I don't think anything else I've ever put my hands on would break 95%.
I haven't seen Spuhr, Nightforce or ARC one piece mounts, those and others might be great, I don't know (I suspect the ARC is awesome).