I like the way Steppin' Out sounds more than I do the '72 box set of the same dates. I think its a fair recommendation, but it is a bummer that is nothing more than a greatest hits of '72 set. It's too bad the entire '72 box doesn't sound that warm and rich.
If you don't have the GD Movie Soundtrack 5CD set, I think that might be where I'd send you next. It, like Steppin' Out, is another one of the better sounding Norman masterings. Has my all-time favorite, 32-minute Playing in the Band.