I love White's machines but I'm totally sold on the CTX.
For what it's worth, I pounded a 1940s house in my neighborhood with a MXT Pro over the space of a year. I cherry picked, then dug iffy tones, and then dug low tones. I found a handful of bullets, a handful of wheat pennies, a bunch of clad, a gold ring, an early great seal button, a few centavos, a silver Washington, two Rosies, a war nickel, and a Merc. This included the 12" coil and a 5.3 Eclipse coil and lots of swing time.
After I got used to the CTX I went back over there....I found two pennies and they were super-iffy. Probably hit them with the MXT but skipped them...only dug them with the CTX to test my theory.
I think knowing your machine inside out trumps a high-dollar detector that gets purchased for shiggles. Now...if you have a high-end machine AND know the nuances of iffy targets and heavy trash, watch out...game on.