EVERY manufacturer makes a Euro back end for their guns as far as I know. They have to. Miller and Lincoln don't even use their proprietary connections overseas. They use the Euro one on most of their products.

But as far as quality. There's not going to be a whole lot of difference. That gun is made by Innotec, one of the top manufacturers in China. We used Binzel for a while, but there was virtually 0 differences. If you ordered the Nutec, well, its going to be the same.