I'm in the middle of my Fidelio challenge and I really like the performing version with the No.3 overture before the finale. I have too much Wagner in my brain to find where is the "dramatic flow" in Fidelio's recitatives. For me Leonore No.3 inserted improves the experience, but also...
This one inserts the overture before the finale. The WPO and Furtwängler give life to this work.

This one inserts the overture before the finale. The WPO and Furtwängler give life to this work.