I love my WOT 15" and I only use it for Relic Hunting as of now. It is a bit heavier than the Pro Coil, and I find it is W A Y more sensitive than the Pro also, I usually will have to hunt between 17-21 on the Sensitivity -vs- 25-27 with the Pro Coil. But, I can cover alot more area and it does GREAT finding deep items. YES the depth guage is usually not accurate, but when I am hunting for old buttons or relics.... that doesn't matter to me. I bought mine new for $215 And I agree that I would not pay more than $150 HOWEVER, a must is a Second Lower Shaft that is permanently attached to the WOT because removing/attaching the WOT coil is a Royal PAIN. One more note, I think that the WOT pinpoints as good as the Pro Coil. Seperation between targets is also excellent. Just my opinion. Hope this helps.