Currently I have both the Quattro and the DFX(also a couple others but I'll just try to focus on the two). I like both machines and they each have strengths and weaknesses. As for depth I would say it is probably too close to call although I believe the Quattro does better at IDing deeper targets. The DD coil of the Quattro is great for covering more ground - of coarse this is a problem in trashy/iorn areas. You really will have to get the 8" coil if you purchase the Quattro(along with the standard 10"). All around you can't go wrong with the DFX. If I could only keep one detectector I guess it would have to be the DFX. It is very versatile. The Quattro you could get frustrated with but in the right conditions is a thing of beauty. Here are the pro's and cons in my opinion.
Reservations with the Quattro:
- Trash. Not very good in trashy and iorn
infested sites. Smaller coil does help a lot but
have to really go slow.
- Display lags audio. Get a good signal and have
to pull off target to get a VDI. Have to rely
more on audio.
- Depth of target not real precise.
Reservations with the DFX:
- Not the best in mineralized soil.
- Needs a little more tweaking to get best
performance.
- Running it hot produces a lot of noise. Get
audio fatigue with all the tones/noises.
- Deep pull tabs show up as coins.
Now the good:
The Quattro:
- Good target identification. Good at identifying
deep pull tabs.
- immediate depth indication of target before pinpointing.
- Good in mineralized soil.
- Good depth.
- Stock DD coil enable you to cover more ground
with each sweep.
The DFX:
- Good at finding silver(especially in 3 khz
mode)
- Good depth(providing you make proper
adjustments).
- Fairly versatile for most any hunting situation
- Good at identifying screw caps(3 inches or
less)
- Quicker target recovery
- Better accuracy in determining target depth
Hope this helps.
Mirage