Well, here could be one reason, which I personally disagree with, and this is not at all to undermine or burst the bubble of the desire for a good quality fillet knife, but one old-time fisherman I knew who used to work off commercial boats, when we discussed knives, his attitude was this: If you need something more than a good standard Dexter-Russell, you're droppin money down to Davy Jone's Locker. His attitude was fishing is all about cutting up meat and he was absolutely convinced that spending more for higher-quality steel is what you do if you want a hunting knife, not a fillet knife. I think some people have the idea that a fillet knife is more "disposable" than a hunting knife, which I disagree with. While I like Rapala and Dexter Russell and there are a host of inexpensive fillet knives, I'm with you all, Surf, Phil, and Full Circle Hook: BRING on the quality fillet knives
And PLEASE also include a shorter stiffer knife in the roundup made of whatever quality steel you decide on.