I was using the 8x6 sef and the 6 inch detech equalizer. Both really great coils. I bought the lion for it's 7 inch size , which i feel is an ideal size for coverage and depth , but still retaining the ability to unmask. I quickly found the lion coil to perform very well in my trashy sites. I also found the ID to be very solid , targets just for the most part, don't jump around. It seems to lock on solid. I have dug targets down to the 8-9 inch range , so i know it has the depth capabilities as well. Not saying it is the best coil out there, but it is a very solid performer on my Etrac and i have not taken it off since testing it. Very reasonable price right now too.