I have a question to ask? I just bought a GTI 1500 and my friend bought a whites DFX. Now I'm new to metal detecting and so his he, and we were both out one day and I noticed that My GTI 1500 even though, it cost way less was performing at the same level as his DFX was. My question is has anyone compared the two machines and had the same results as I did? or is it because we are both new at metal detecting that our skills are the same and it makes both machines look like they perform at the same level?