I can't recall exactly, but I seem to remember you are fairly new at this? Maybe 4 months or so? All detectorists have the learning curve to go through, spend some more time with yours and don't feel the need to blame the machine, many people "upgrade" a lot, only to find out that it's not the machines capabilities, but rather the operator's choice of (pick one):
Locations
Machine Settings
Sweep speed
Walking speed
My personal feeling is this-
ANY machine will find goodies, the more expensive doesn't necessarily mean better capabilities, and RESEARCH is the key to finding the good stuff. Put yourself in a spot that not many have hit before, and the goodies will come.
White's makes good machines. The Classic 2 is an older model, but that doesn't mean its not good, or that technology has come so far that a new machine will "find more". If you don't change things up every now and then, a new "deeper" machine only means you dig deeper holes to find more junk, LOL!
Hope this helps- the key is research