I have the Etrac and Sunray probe, not to mention a lot of coils; but if I were starting out, between the two, if money were no object, I would probably choose the CTX, just because its design is a few years newer. I also have the Equinox, Minelab's newest multifrequency machine, which gives so much bang for the buck that you really might want to consider it. The Etrac gives more accurate ID and depth info than the Nox (this would also be true for the CTX, maybe more so), and I prefer the Etrac for coins if iron is not too much of a problem; however, the Nox is very good on separation and unmasking in trashy iron-filled ground and will find coins (and other things) where the ET/CTX are nulled out. And the Nox is wireless and waterproof, with a great display, and very light (compared to the ET/CTX). Relic hunters in particular really seem to like it. Depending on where you hunt and what kind of hunting is most important to you, it might be worthwhile taking a look at the reports on the Nox. While no one but Minelab knows, I suspect the Nox is probably the scaled-down version of what will be the next machine in the Explorer/ET/CTX line.
