I was looking for a knife that was smaller than my B6LE that was still big enough for similar duties. The 511 hit the nail on the head. It has all the blade I need but with a smaller handle. The 511's over all size allows me to weekend carry without it being noticed. The grip is much smaller but big enough when I need to cut open feed bags, twine, packages and the like. If I were going to baton or chop though, I would be really careful with the 511 or just reach for the B6 instead. Both knives came really sharp too.
Franco