I like Single sensor xyz for most rough searches. Then I switch to Differential and z for pin pointing where it's noisy. I would have not found it with my pistol grip schonstedt.
You can charge the Jtip from the LS USB port.I found a 1/2" rebar (1ft in the ground), that was about 3" from a water valve (cast metal casing). The schenstedt wouldn't pick it up.
I still keep my schenstedt in the truck in case the battery goes down on my J Tip.