This is not a review of a single set but rather 3 sets. So it could as well be called the Das Rheingold marathon. The reason I listened to 3 sets was that I had them sitting on a shelf and hadn't had the time to listen critically. Fortunately I found the time!

I placed all the sets cast side by side and will refer to them by their conductors:

James Levine, Deutsche Grammophon, 427607-2