I have the 6x8 SEF coil and as far as separation and pinpointing goes, it's basically the same as the stock Pro coil. It's a great coil and I do use it from time to time, but not very often. I thought I would use it more, but the Pro coil is so good that I rarely need to. That said, the SEF does have its uses. It's smaller and can get into areas easier than the Pro coil. That smaller size does allow it to work the trash better, but it has to be a very, very trashy site to have an advantage. Fortunately I have some sites like that. If I were to do it over again, I would probably go with a 6 concentric coil or DD coil from the same manufacturer.