I'm looking for a commerical grade fillet knife. I'm not so much worried about the price because I look at it as the knife will pay for itself with the amout of fillets I catch. This is what I got, I have a number of hoop nets and catch plenty catfish and the knives I bought in the past don't hold up. I tried the original mister twister and that lasted me about a year and I burnt up the motor in it, so then I got the salt water mister twister and that one is going on about a year and a half and the motor on it is starting to go out. I look at the rapala ones but I'm nervous about getting one cause it looks like the replacement blades are hard to find for it. If I have to I will just buy a mister twister every year or so but I was looking for a knife to last me about 3-5 years. I'm cleaning about 500 to 800 fish a year so I would really like to find a decent knife. Thanks.