Steve,
I've had the XS since 2001, tried and gave up on a F-75 a few years back, and recently bought a CTX-3030. I eagerly tried a few wonderful sites that I've hit hard with my XS, hoping that these sites would "come alive again" but so far not at all. Yesterday I was out at a new yard with the CTX, managed three silvers, an IH and buff. It does find coins, but I'm not sure it does any better than the older models of FBS detectors.
I'm not sure why I'm getting different results than some of the others have posted. With the XS I always hunt open screen ferrous, I'm wondering if the people seeing better results used discrimination on their other machines and maybe the CTX does this better in this regard than the older machines.
I'm also seeing many of the idiosyncrasies of the XS in the CTX, falses on big deep iron, depth meter inaccurate on shallow targets, doesn't seem to do better under power lines, etc. I'm going to keep on trying, but not sure if the cost of the CTX and the higher prices coils is worth it. I am looking forward to trying some water hunting in at some old resorts; something can't do with the XS.
Wavering in Wisconsin,
Chris