Tested a few different wires the details detected the average user would not notice. For copper coated wires a few companies make wire for different brands. ER70S-6 is a basic wire comes down to copper coating, cast and helix(Memory of wire). Asian wires tend to run a thinner copper coating, slightly dirty with tight cast. Esab tends to flake. Lincoln L-56 and L-59 is expensive due to product approvals. There is more to it than people think