I just bought the $20 one from Academy. Mister Twister. I had never used one before this, and I can honestly say a regret in my life is not having one before. My gosh it's so much easier to fillet cats. Now I can't say how long the blades and/or motor last, but just in the few times I've used it, it's worked flawlessly and saves well more than $20 of my time.