New coil wanted

[wheatfinder13]

Hey y'all
I'm lookin to get a new coil for my teknetics alpha 2000 and I need y'alls help to tell me which to get. I just do coin shooting with my standard coil and I know y'all might be able to help, which coil would help me find more coins at deeper depths? Thanks

 

[cudamark]

Assuming the coils are available, a smaller coil will help target separation in junky areas but will get less depth, and large coil for open areas or places where you want to go deeper. You might lose a little sensitivity on small items and pinpointing might be a little harder with the large coil however.