Tony,
Credibility? What Credibility? I can’t ruin what I don’t have 
RE: Copeland vs Overton volume - honestly I think you’d have to play them side by side in the same room to see what I mean. I have two Overton Low D’s (see my comments to Jack, below) and I stand by my assertion that they are about the same volume as my Copeland Low D. I suppose it’s possible that my Copeland is louder than most, but this seems unlikely. Maybe you just played a particularly loud Overton, or it could have been the room. Who knows. It’s also entirely possible that I’m insane, I can deal with that
Actually, the high end on the Copeland Low F I just sold was definitely louder than the high end on my Overton Low F.
Having listened to the Joe McKenna CD again, I have to agree that track 3 sounds like a Copeland. I’d guess track 4 and quite likely 5 as well. really ought to try to contact Joe and get the run-down of all the tracks from him.
I’d like to revise my opinion of the CD a bit too: I really like about half the tracks, the other half leave me flat. Never the less, Mr. McKenna is 100 times the player that I am, so maybe I should just keep my mouth shut till I can play half as well.
Any luck finding Eoin Duignan’s or Eamonn Dillion’s CD’s at Amazon? I sort of doubt they would stock them. Dillion has some soundclips on his website (www.Eamonndillon.com) but as I reacall the only clips up there are pipe tunes. Duignana’s webaddy is: http://www.duigo.com Can’t remember if he has sound clips there.
JackOrion,
I have found everything that Colin told you to be true: The standard Goldie Overton is a little snappier and harder to blow on the high end than his Big Hole model Low D. There is still nice resistance on the high end of the Big hole, but it’s just not as extreme. I also think the Big Hole sounds a little more mellow at the top of the second octave.
Regarding the volume: I really can’t tell much difference, if any between the two. You’d think the Big Hole Low D would be louder, but it’s not, at least in my case…YMMV.
Personally, I think the Big Hole is the way to go, if one has the fingers for it. The stretch really isn’t so bad, it’s just a challenge to seal the holes if you have narrow fingers like I do. Good practice though 
Loren