The Explorer XS is almost the same machine as the Explorer 2 or the Explorer SE. The Etrac is a little different but it has the same searchfield going down into the ground. There isn't a dimes worth of difference between any of them. That being said, they are one of the best machines out there if not the best.
I just got back from the GRD hunt in Virginia this past weekend. 3 days of searching hundreds of acres of a Yankee camp. There were about 70 guys there using the latest machines-F75, T2, CTX3030, even gpx gold machines. About half the guys spent most of the weekend digging huts while the other half spent the entire weekend trying to get a good signal under their detector coil, me included. The XS I was using and have used for 15 years performed extremely well compared to the other machines. I dug 2 breastplates, 1 U.S. boxplate, lots of 58 cal. bullets, colonial bit boss, 5 or 6 buttons, knapsack hook, percussion caps, even the lid off of a percussion cap tin. Most of these targets were DEEP. The plates were in the 10"-14" range. Many of the bullets were that deep too. I saw a few plates dug from surface hunting but don't think anyone else found more than one.
I think if you take the time to learn how to hear deep targets the XS can be your best machine ever. If you aren't interested in deep stuff and want a light, fast, responsive machine for the 0"-8" range then get a Teknetics F75 or T2.
There are some things that are really different about the Explorers compared to other machines and it might drive you crazy if you don't have some help or read the right references. If you need help with it I'd be glad to help in any way I can. I love talking about detecting and am still excited about the Explorer after 15 years.
Neal Wright
(NealNoIN)