I like almost all the library music releases, depending on my mood.
Perhaps the great quality of De Wolfe, KPM, Chappell and Bruton is above all else.
But I love the Italian labels, especially RCA, CAM, Omicron/Liuto/SWS and Fonit-Cetra, including Usignolo, Goldfinger, Commenti Musicali series and Nuovo Repertorio Editoriale.
I think of NRE as the Italian KPM 1000 series, with all due respect.