I like the coil. But the 6 DD has been more profitible for me I think. I Have dug a fair share of my wheat with the 5x10.
If you look at the 5x10" DD/HF Coil and the 6" DD/HF Coil - Visible Differences by Nero Design, and X-Terra 70 tips and tricks- Des Dunne, Field Application Specialist, Minelab International you will find some good comparisons.
I can hunt faster with the 5x10. I think the faster search is because the 5x10 can be swung at a faster pace, not just the length. Compared to the stocker I can pinpoint better and faster and can fish coins out of trash. For me those fringe signals are most likely deeper nails, so far. I am getting more confident at determaining iron though. I have tested in the back yard and show the 5x10 as deeper but the FAQ sugests it should be the other way around. However I tested on a jar lid not gold. So inconclusive at best. I believe I get similar depths in the field on coins and nails
Runs good in my neighborhood and sometimes is deeper than the stocker because of soil condition.
Bottom line here is I am still learning!
Jeff