Which coil is best?

[porchdawg]

Hello everyone,
I own a Garrett 1350 with standard coil. I am wanting to get an extra coil but not sure which one is the best for the conditions I will be hunting. My soil type is called sandy/loam, but there is also the GA red clay issue to deal with and in some places there is a lot of Kaolin. Would a 12" DD type coil be best or just a standard Rino 12x14 work better in these type conditions?

Thanks

 

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