I have a Sorex, I enjoy using it but it takes some getting used to, it's Russian so you just have to get used to the slightly different language for one or two controls. It's not difficult. Sparky machine. I have not had the chance to hunt deep yet as it is sensitive and hasn't let me, but maybe on a quiet field i'll see the results. Not a simple switch on and go machine but then neither is the ctx from what I have heard. I can't say it's deeper than a ctx as I have no comparison, but I bought it based on good depth reports from some well respected detectorists.