My new CDP does SACD too....

Any of the San Francisco Symphony's Mahler cycle (on their own label), take your pick, though I particularly like the 4th and 6th Symphony recordings. Also, the Harmonia Mundi releases have been uniformly very good to excellent--the de Falla Tri-Cornered Hat/Nights in the Gardens of Spain disc has been one I have returned to a lot, though the piccolo in the former can come across as shrill as it does in real life. And Julia Fleischer's recordings for Pentatone, especially the Mozart concerti, are excellent.

T-bone, that Bis recording you mentioned is a terrific one. As a rule, the SACDs on that label are very good, as are most of the Telarcs. I forgot to mention the Ondine label, which does recordings of both the Philadelphia (live concert recordings)and Minnesota orchestras. There is a recording on that label of the Philadelphia Orchestra with Olivier Latry on organ playing the Barber Toccata, Poulenc Organ Concerto and Saint-Saens Organ Symphony that is excellent, and if you have a true full range system it will give you just about the most bass in the last octave (down to 16 Hz) that I've ever heard on disc.