Sorry I have been away,had to go out of town to visit mom. And to try out the GB SE on the worst site I have ever seen.Its a good machine I learned alot about it this weekend.I was able to dig mostly non ferrous,I tried several different disc settings.The iron is unbelievable in this place. Nails come out of the hole with every target bar none.Big iron is the norm,flat iron and tin will test your back.I ended up using disc at 50 most of the time which drops the audio from 1-10 all together and11-50 is low tone over 50 is high tone.I took sat afternoon to dig big iron just to learn the machine a little,there is something to be said about sweep speed on the gbse. with the settings above and a brisk sweep speed which is recomended will high tone on iron starting around 2sq in surface area maybe a little smaller.If you slow that sweep speed down it will tell you its iron,It may high tone two way and low tone the other way or any combination of highs and lows.The random-ness is a good indicator its iron.I dug about 20 lbs to test it. The machine doesnt want to hit on a full horse shoe on those settings but if you swing that coil quick it will hit it,I dug 2 unbroken shoes same thing both times.The biggest problem I had was finding clean ground to ground balance,I am not convinced that I had it right all weekend.I saw it move from 40's to 60's on different areas of the same site.I am not sure how to combat this,i walked around 10 minutes when i first got there in all metal looking for a clean spot,I didnt find one, just tried to get in between two signals to balance it. I think I will trade for the T2,I would like an Omega but the T2 is available for trade.