Definitely try the Vaughn Williams Sea Symphony (I'd have preferred a different VW symphony, although this one is growing on me) with the Atlanta Symphony and chorus conducted by Spano, whose work I like a lot and who I wish was available for our orchestra here in New Jersey. It won a Grammy and actually deserved that award. Tough to reproduce the massed voices well on a home stereo system, and it was only when I had the transformer upgrade for my player that I realized just how good this recording is. Telarc's Mahler cycle with Zander is quite good too, although a friend of mine felt at least the Mahler 5 sounds too much like B&W speakers, which he doesn't like. The Debussy/Turina and Berloz discs with the Cincinnati Orchestra are also quite good, although it's a drier acoustic so not as spacious-sounding as the VW--if you compare these discs with the early-DSD Dukas disc with the same orchestra I think you'll hear a bit of a difference in the sonics, perhaps some changes made to the hall, perhaps the recording stream. I also think you might like the SFO's Mahler cycle, which is a bit closer miked than the Telarc recordings but has tremendous dynamic range, very transparent and natural sound and good performances, in my view.