I agree with Barry. He's an acquired taste, but he's worth trying. I like his Symphony, although it could be dismissed as facile by some. I like the idea that the slow movement is a memorial to FDR. It kind of moves me to think of an American president having that kind of effect on an exiled composer.
The De Priest version with the Oregon Symphony is a fine version. When Welser-Most used to guest conduct in St. Louis, I eagerly looked forward to every appearance. He did a killer M6 and M7 here, for instance. However, I can't say I've been too enamored with any of his recordings. I blame most of this on the recording, which doesn't seem "fat" enough for Korngold. Things seem a little too streamlined, and as a result, rather colorless for me.
If you don't know it, the Violin Concerto is a fine work, too.