The Ratweiler is a great camp knife and chopper, but the longer blade of the 911 has the advantage in chopping. I have used them both, but never had them at the same time to compare.
Which would you prefer if you could only have one?
Neither. I prefer the M9LE to those. But now that I have the 1311, that is my favorite yard/camp knife. I'll probably sell my 911.
