Its all relative.One thing that stood out for me is that the SDC easily beat it on all targets with the 14x9 Coiltek vs 12 evo, and the 6000 with it's standard 11 inch smashed it for depth.
Will be interesting to see how it goes with bigger coils, but early indications are not promising!
Interesting too, just how poorly the QED did !
Rick
Coming from an old VLF I thought the TDI SL was outstanding at depth & mineralisation ( and its conductivity switch still gives its users a unique and useful option). But detecting on same ground as others it was apparent that its ground handling was at the lower end of PI range. QED delivered much better ground handling but not a step forward otherwise. SDC was a big step forward for me in ground handling, small gold and max depth. 6000 blows them all away as it should for that money.
My comment about trying a big coil on the AF-E1500 is that I always want to test the limits of my equip so I know what their operating ranges really are.
... and also because when I get my big coils back I can try them on the E1500, unlike for the SDC & 6000, which are locked systems.
I have only taken the E1500 to one nicely variable area so far but after my big winter trip I will report back.