hello, i've been useing my xlt for quite a long time. right from the start i used the factory programs and had very little problems with depth and finding coins and relics. i was thinking about getting a DFX but from what i've read i have reservations. there's even a dedicated forum just for the DFX? are the preinstalled programs any good? i'm reading about depth problems with it and just so many programs sent in by users makes me wonder why. anyway, any help would be appreciated.