If your old like me, 71, You can only dig so many holes,, so why waste time on trash..
I use to dig iron and everything above iron,, in all that time,,may be one or 2 good targets
were dug that my unit said was trash.....I love the Iron disc. and Iron Audio.....
I have the AT Gold and 2 AT Pro's,,, I like the AT Pro better,,but not by much....
I never use the STD. mode,, and wish it was not on my AT Pro,, in its place,
the all metal mode and the threshold mode from the Gold instead...
If you hunt in the STD. mode,,why not just buy a Ace 250,, the Pro mode is
deeper and you get more help with the iron disc and audio.....
My favorite coils are the 5x8,,4.5 SS,8x11 and the 6x9...
The 5x8 and the 4.5 super sniper coils have made my best finds,,but, it just depends on where
you hunt,,,I like trashy areas,, because some people will shy away from them,, here..
If I hunt a area to trashy to GB,,I can put 80 on my Pro and 50 on my Gold and hunt,, love that manual GB..
It all depends on what and where you hunt and like best,,the gold comes stock with the 5x8 coil and the Pro comes stock with the 8 x11'' coil...
I like the DD coils over a Con. coil...With the same size coil,, the Gold might be a inch or two deeper....
Good luck with what ever you pick,, I have used a lot of other units and have other units,,
2 At Pro's,,AT Gold,,GTI 1500,,Explorer SE Pro, F-75 ltd,. CZ 3d and a I. D. Edge,,,
and I grab the AT pro with the 5x8 coil...or the gold with the 4.5" coil....