NEL coils for F19 detector

Would you recommend the NEL 9 1/2 inch coil or the 12 inch DD NEL coil for the Fisher F 19? Thanks!

Stock F19 coil already separates very well. Even the 11DD on the G2+ (same machine).

I'd go for the larger coil as depth is not its major selling point. I'd pick the SS for a F75 or T2...just not the F19 as it won't be adding much separation capability or depth compared to the stock 5x10.

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I added an Ultimate 13 coil for my F19 and it improved depth greatly. I use the same coil on my Omega 8000. The Omega tests a little deeper, but the F19 is no slouch with that coil.