Who says Rachmaninov's music is shallow and too sentimental? Blasphemy!! Maybe some over-indulgent performances by naive pianists give that impression, but on this recording, with the composer himself at the keyboard (and he was one of the greatest of all pianists) there isn't the faintest suggestion of sappyness anywhere. Sure, there's passion in his "interpretation" (if you can call it that) but he lets his passion flow through the music, not overwhelm it.
Of course, the audiophile types who love glitz and glitter won't be pleased by the prehistoric recordings, but I say, great musicianship over great technology!! Don't miss out on this just because of the sound quality. It's a five-star performance if I ever heard one.
I'd suggest getting, along with this, the companion disc, featuring the (undeservedly) less well known 1st and 4th concertos and the Paganini rhapsody