So, I've been mulling this recording since I downloaded it. RDS is average at best. Romberg was a very pleasant surprise. Her voice may not have the 'correct' timbre for the work, but her purity of tone and control of her vibrato was refreshing. She was also singing with the orchestra, not a part from it. Lots of nuance, and intelligent singing from her.
Fischer's interpretation was good to great, and I feel like he got back on track with this one. It really reminded me of Kubelik's recording; too bad Fischer didn't get his tenor. It's all very sensitive and natural, really paying attention to how the singers and the orchestra come together. I was planning on being disappointed by this one, but am pleasantly surprised. Will it replace, Klemperer, Kubelik and Sanderling? No, but it's quite enjoyable nonetheless.
One last thing. This may be the best recorded orchestral work I have ever heard.