At my club hunts I quit entering the deep coin hunt, (6" or deeper for silver dimes and quarters). I use a Garrett GTI 2500 and the Minelab users had all the prize coins dug up before I really got started. Oh, my GTI has found some coins that deep but the tones were really iffy and it takes too long to figure out whether to dig or not. Most of the coinage I find is 6" or less. My ACE 250 will go just as deep it seems , at least for coins. The 2500 will go deeper for larger articles such as artifacts however. But, the Minelab will be my next machine. I had debated between it and the DFX but had settled on the Minelab. Now I am just saving my pennies....literally, and hope to get it by next fall. Goo luck EX-DFX - Gregg!