I finally got a chance to use my new Edelmetall burner. It's great. I think the actual burner component is the same as in the Blichmann, so I'm not surprised that it's powerful and quiet and very easy to control with the needle valve. And the housing does a good job shielding from the wind. It wasn't terribly windy on Saturday, just a little gusty. It will be interesting to see how it does in stronger wind.
Unlike with my old turkey fryer, there is no constant flaring, no need to keep relighting, and no thick layer of carbon left on the bottom of the pot.
Also, in my garden, where the pavers aren't perfectly level, 3 spread legs are better than 4 straight legs. It is extremely solid and sturdy.
Finally, some of the copper near the flame did turn a little iridescent by the end of the day, which is pretty darn good looking.
I did learn that with a propane tank approaching empty, I couldn't get it hot enough to keep 12 gallons of wort at a full, rolling boil. I had to swap out the tank before the tank was empty. Which is kind of a bummer. But I'll use what's left in the tank to heat mash water or something next time.