Hi! I am wanting to get a knife sharpener for putting edges on my blades. I have been using a cheap fix angle sharpener and it finally bit the dust. I have a diamond stone, but I am not good at free handing edges. I was looking at the knife sharpener attachment from housemade (I have a revolution gen 5) and also at a WEN water cooled sharpener. Are there any other options that I should look at? I'd like to keep it under $300. Thanks!