x2 for Bubba Blade.
Heard mixed reviews but decided only way to decide was to try one out. has worked great all year. keeps a great edge, only need to pass it across a steel a couple swipes every fillet session. I got the big one and was a little worried how it would handle small fish like a pink, but not worries, has worked great for everything from kings on down.
A close second would be a 8' Victorinox Fibrox breaking knife like this one.
http://www.amazon.com/Breaking-Knife-Bl ... llet+knifeit's a good knife but definitely needs more frequent steel work to keep the edge razor sharp.