Beethoven lovers take note: there are two new "Fidelio's" available, neither of which is perfect but both of which are quite good in their own ways.
The <Fidelio> from Naxos (8.660070-71) follows the last revision and uses the "Fidelio" Overture, followed by the Gilbert & Sullivan-like duet. It also has just enough dialogue to let you follow the plot, provided you read German, since there is no English translation of the libretto. The offering from Teldec (3984-25249-2) uses the "Leonore No.2," followed by Marzelline's aria and then the duet. It omits the dialogue entirely, based as it is on a Chicago production that had the Leonore narrate the plot between her entrances. The booklet inconveniently supplies these notes in the introduction and not in the libretto, which is tri-lingual in case you need a French as well as an English translation of the German.
Each set has a good Florestan in Gosta Winbergh (Nax.) and Placido Domingo (Tel.). In general, the Naxos cast is lighter voiced with a good Leonore in Inga Nielsen and a more than adequate Pizzaro in Alan Titus. The only sour note is the terribly sounding Fernando (Wolfgang Glashof) who seems to have been given the part because someone owed it to him. And how good it is to hear the deep bass of Kurt Moll as Rocco.
The Telarc set has Domingo, I think, to thank for its existence, and he is splendid. The rest of the cast is fine, except--and this is fatal--for Waltraud Meier, who used to sing mezzo and does not seem up to the demands of the title role.
The Naxos set has the Hungarian Radio Chorus and Nicolaus Esterhazy Sinfonia under Michael Halasz in a nicely paced, (again) somewhat lightweight but very enjoyable rendering. On Telarc, we have the chorus of the Deutschen Staatsoper Berlin and the Staatskapelle Berlin under Daniel Barenboim, who plays as an appendix the other three overtures Beethoven wrote for the different versions of this work.
Which one to buy? Domingo fans will of course go for the Teldec.. Others might opt for the Naxos at about half the price. I plan to enjoy both.