Things to consider:
1. The ODC is a little smaller and lighter than the Cumberland or the Fish Cat 4, so either will float you better.
2. The Cumberland is a little bigger than the Fish Cat 4 and has larger storage pockets.
3. The Fish Cat seems to be the best quality of the 3, but I still use my Cumberland that will be 7 years old in February this year.
4. Wild Card: The Fish Cat 5 is bigger than the Cumberland or the Fish Cat 4.
The Cumberland has won the battle on price and storage size for some time. Right now availability and price has changed the competition playing field.
I hope this helps.