The thing that gets to me with all this though, is you already fork out anywhere between five and ten thousand for a detector, only to then have to fork out more for far better coils than they come with, handles that don't break, enhancers to clean up their crap sound, headphones that actually fit and don't sound like you are sitting in a tin bucket, batteries that don't hang off your back where you can't get to them, longer leads than they supply, and/or a transmitter/receiving unit that gets rid of the multiple ridiculous leads. Personally, I would have preferred that Minelab offer just the basic control box and nothing else, as an option when purchasing. Then, you could go spend the difference on quality accessories that are actually the best your money can buy.
To be honest, if I knew when starting out what I know now, I would have bought a QED and set it up with a Whites Shaft and the coil of my choice. I'd be getting free upgrades as they are developed (not the GPX 4000, GPX4500, GPX4800, GPX5000, and then discontinuing the 4500 thus instantly devaluing the later models with the cheap run-out deals, and there would be no increase in price with each new upgrade).
It all kind of reminds me of that joke where the guy buys a parrot that doesn't talk, after being promised by the petshop owner that it will. Each time he goes back telling him that it won't speak, and each time the guy sells him something else, telling him "if you buy this it will talk". Sells him a ladder, then a mirror, then a bell, until finally the guy comes back upset, telling the petshop owner that the Parrot has died. The shop-owner asks him "So, before he died, did the Parrot Say Anything at all"?
Yes the customer said, just before he closed his eyes and died the Parrot muttered "Don't they sell any bloody birdseed in that shop!!!"