OK not much of a discussion here but. I did a video some of you may find interesting. So my pick even though it isn't the best performer in the video is the XP Deus with the 9" HF coil. The reason I picked it is due to a combination of coil coverage and above average performance in iron.

YouTube

Andrew

XP Deus-Minelab Equinox 800-Minelab GPX 4000-Tarsacci MDT 8000-Minelab Vanquish 540-Easy Radar ER500A GPR