There is an Ondine SACD of the Saint-Saens, a live performance by the Philadelphia Orchestra, Eschenbach conducting and Olivier Latry on the organ, which is quite good. Latry likes the 32 foot stops and is a fine organist. The real treat on the recording, though, to me is the Barber Toccata Festiva, which can knock your socks off, as well as the Poulenc Organ Concerto. This disc was from the inaugural concerts of the new organ in Verizon Hall.
By the way, I still like that Dewaart/SFO/Guillou recording, both sonically and interpretively.