Exactly the same thing here. I had some Mustad 94840's and my finished dry flies were rusting before they ever touched the water. Since I've started using Tiemcos, I haven't had that problem. And you're right about getting what you pay for. I've only recently begun using what most consider "the top genetic hackle" out there, and the difference between them and what I used to use is light-years apart. Perhaps Mustad's new line of hooks are better.