Bought a used Quattro from this/Treasure Depot forum. Have had it in use a little over a week and have gone over areas I detected with my ACE 250 std coil. Results were such that it was almost like I had never been there before, found lots more clad and some jewelry. The Quattro learning curve for me isn't too bad since the tones are similar to my Excal.Learning more every time out. Some areas are trashy. Just ordered an 8" minelab coil. Have a Sniper coil for the ACE. Does anyone have any firm opinions on the necesssity for a X-5 or Joey coil for the really trashy areas, or would I be OK with the 8" Quattro and ACE Sniper combo. Does the seeemingly superior performance of the Quattro and standard coil carry over to the small coils to a significant degree over the ACE? Thanks.