Old Nugget Finder 25" super Lite Mono coil

I got a chance to buy a older white fiberglass open spoke 25" NF mono coil for $269! I got a GPX5000 and my biggest coil I have now is the new Advantage 14 x 9" Super Lite Mono, and a Commander 15 x 12 Mono. I hunt mostly in AZ around the Wickenburg area. Would love to try GOLD Basin this coming season so I have been thinking about a bigger coil? Should I buy... or save my money for a newer Advantage coil the same size?
More Au to you, Robert

how deep is the ground u r detecting in.

Gday Robert
If it's any help, I borrowed a mates 16" white NF fibreglass with a view to buying one. I have been running the 14x9 NF Advantage for a few years now - brilliant.
Anyway, the white spoked 16" was just an emi magnet!! Persevered for about half an hour then changed back to the Advantage and a completely stable machine again.
I still think I'll buy a 16" but it will be the latest NF Advantage.
Use the $269 you would have spent on the old coil towards a new one I reckon.
cheers
Brett

ive got a 16 adv and it runs quiet and still picks up shotgun pellets etc.also got a blitz which i tend to keep going back to. mainly cos the blitz is easier for me to pinpoint and work around the scrub, and seem to always find something with it.both great coils.