Im running a Gp Extreme ,modded by Woddy and have had it ,seems like 10 years.
Runs sweet and does the job really well.The Lucky LArk,Li Ion Battery combined with the Amp is all i need.Oh and a good set of headphones,Thanks Nenad!.
Actually i also use the Apple ear buds and find them excellent.
Regarding the machine,if any,the only gripe i have is the "Level Adjust".Which affects the pausing of tracking.Kinda does my head in ,regarding tracking out weak signals/combined with hot noisey ground at times.
Other than that very very stable.Huge improvement on hot rocks from stock....Gain control great,not to mention the wider Frequency adjustable pot...Thanks a bunch Peter!.
I run the 12 Inch EVO...Goes deep and also the 12 Advantage.Best all round coils in my opinion.