I have the Deep Port and love it. I have not experienced corner wear, but I rotate my bags everyday and don't carry it all that often. I think all the legacy duffles are susceptible to corner wear because of how they are made.
I have the east-west duffle in black and I love it! I haven't experienced any corner wear but I've only carried it a handful of times so far. It's a great size and is a nice alternative to the regular duffle for the shorter ladies (I'm only 5 feet). The regular duffles were always too deep for me and were a weird length for me.