Thanks so much for reminding me that it is possible. I own the Omega 8000 V4 w/multiple coils, Fisher F22 & F44. I am intending to try many air tests in the near future so I can hopefully decide which detectors/coils to keep and which to sell. I need to thin out the herd as I'll probably be forced to move in the near future, so need to complete the tests soon.
Fisher cz6a,,,Fisher cz-20,,,,Teknetics gamma 6000,,"Tek Eurotek pro ,,Fisher gold bug s.e 2.9er,,Tek T2 ltd se,,Tek T2+,,Minelab Vanquish 540 and 340 and a new Nokta Legend and Garret Infinium
The stock F44 coil is one of my favorites....and I'm a DD guy at heart. It works well on my Omega 8500 and is a bit quiter than the 11DD. Lovely coil with great depth....and the teardrop tip works well around trees where trash is usually plentiful.
I am a newbie here and only been detecting for about three years. I bought a 7 inch coil for an f22 but it is slightly elliptical. It seems very much like my 8 inch coil on my Omega except it can get in smaller places and seems to separate better in trashy areas. I cannot say whether or not it is less deep as most of my finds are less than 6 inches anyway. I hope that helps.