hiya silverman,,the cortez is a majic machine,,the depth is better than most tesoro machines ,other than the tejon,,and cibola or vachero but probably on par,,,depending on the terain,,,its got a manual balance (so has the Vachero) but the auto is so good ,,WHY PAY MORE ??? it dont however have ,,SUPERTUNE,, and thats the boy for extra depth (if you can use it on the terrain),,the target id is really good though,,i love it,,,,, the tejon over in England was a bit too sparky and registered iron as a good target a little more than the other tesoros,,but they produced the vachero/cibola to make a more relaxed but deep machine ,i can tell you i have a cibola, the auto vachero,,and it is totally AWSOME,,you can supertune this sucker also and the depth is huge,,,they have given it an extended disc. and you can litterally choose (up to a point) what iron to reject,,,BUT the advantage that i see with E>D> 180 discrimination,,is that i had it fitted from new with the alternative 12 x 10 d.d. coil which is less suseptible to minerals than the stock coil,,, and on SALT WET sand and IN THE WATER,,this machine EXCELS,,,it is ,TOTALLY SILENT,,,,its as quiet as the minelab gt,,and as deep ,,if not deeper on small targets,,,the other obvious advantages are,,(1 ) super fast recovery after iron( the g.t. is crap at that) try it yourself,,,put an iron nail next to a good target of ANY description on the ground and see how fare you have to move the nail before the machine picks it up ???, (2) to anyone who has used the g.t. is,,,its half the weight,,,lovely,,and,,,its HALF THE PRICE,,,,,EVEN LOVELIER,,(if there is such a word),,i will tell you what,,,its the best all round machine i have ever owned,,,,PERIOD ,,,,if TESORO plan in the future to stop production,,,,,i will buy 2 more in the same configuration and put them in the cupboard,,,,,I LOVE IT ,,best rgds