My grandfather had a machine like that back in the early eighties. I was a child and didn't really understand what was going on, nor did I see the appeal of it when I tagged along. But I think back to how he was killing it and I feel a bit of envy. I'd happily hunt in all-metal if it meant finds like his. Every site was virgin and there were no other detectorists around for a while. He eventually became a dealer (I think for White's) and founded the club in that town which still exists today. But even then, I think about how few their numbers were and how many places there were to hunt even on public land, and I realize how uncompetitive it was back then compared with today.
It makes me wonder who had it better - the old-timers with the beep-and-dig machines, or us newcomers with the more polished detectors. I dig far fewer holes than he did, but I also have a far smaller finds pouch. I think that I'd rather have it like he did. I'd happily dig holes all day if I had more to show for it than a few bucks in clad and a couple of bottlecaps.