If I was shopping for a new filet knife the two I would check out first are: Spyderco Catcherman and the Cold Steel filet. I haven't used either knife but they both have a great reputation.
If you want to do some research on the topic I'd suggest you check out: http://www.bladeforums.com/

regards.....MikeT

[This message has been edited by MikeT (edited 03-01-2001).]