I have owned the Pro and own a standard SE now with the pro coil, which is the same thing, and an E trac, with 2 pro coils, and the 8x6, 12x10, and 15x12 SEF coils. The SE is as deep, but VID is not quite as accurate, SE drops off to the left of the screen, indicating iron, where E trac drops lower on screen, indicating, iron, on deeper coins/silver. Not off by much, but just a little off. There is no TTF on the Se, but the sound of silver, IMO, is better on the SE. The E trac is a little more responsive in trash, with visual ID, and seems to me easier to operate in iron, although the SE is usable, it just requires going slower with the same coil. A smaller coil for either machine in trash/iron is a very big asset. I enjoy owning the E Trac, but do not regret starting with the Explorer and learning, and then coming back to it again. Explorers are great machines.