if i already have a cibola and vaquero would a Cortes really help me out any? i know it has tid but i like to hunt with sound only as i like to generally dig just about everything. i don't know if i could get used to relying on the meter knowing in the back of my mind it could be fooled. but does the Cortes have any other advantages over the others that would help? also would like to here some experiences with tid if anybody seen where it was fooled.