Well I will tell you, you are going to be just as disappointed with the Legend in my opinion LOL
the issues you are describing are inherent in all Digital detectors and the reasons I have gone to Beep and dig detectors, i am currently using three beep and digs that will spank even the manticore and the Deus 2 in depth and calling a target ferrous when it is ferrous and calling non ferrous when it is non ferrous at depth, I am currently swinging a Deep Tech Vista X, Golden Mask pro 4WD and a Golden Mask 7 and those three detectors can pull a Non ferrous target out of a pile of nails sitting on top of a non ferrous target
watch this video and yes I have tried this when I received my Vista X