Your favorite Cello recording

Hi, I like smooth, sweet, and deep sound from Cello. I enjoy Bach's Cello suites by Rostropovitch and Starker. Of course, some of YoYo Ma's recordings. Could anyone suggest his/her most favorite Cello recordings? Thanks.
Thank you all for your sharing with me your favorite Cello recordings. Definitely, I will look into your suggestions. Personaly, one record that I really enjoy is Sonata for Arpeggione and Piano by Schubert (M. Rostropovich) Decca 443-575-2. To, I tried to buy the CD that you recommeneded. J.S Bach - Viola Da Gamba Sonatas - Veritas/Virgin CDM 561219 (also J. Savall). Somehow, it is not available on the major online CD stores. Where did you purchase it? I love to hear the piece, but I cannot get the CD. It is a pity.... Many thanks to all of you!!
Tibor de Machula, he really could play the 'cello, and Ludwig Hoelscher and Enrico Mainardi. Maurice Gendron and Paul Tortelier, not to mention Pierre Fournier...
I am at work and can't remember the name off the top of my head, but I have an analog recording of a solo Pablo Casalis doing bach cello concertos. Real gritty sound - it needs the right system to play well and I'm not sure that I own it (sounds great over at my Dad's house). With only one instrument, you can hear pull of the bow on the strings and the resonance of sound in the instrument. I like the undisguised purity and simplicity of this disc juxtaposed with the complex music being performed. Another favorite of mine, but just because I am a Vivaldi fanatic, is CD featuring Ofra Harnoy (sp?). Exquisite cello playing. Sorry I can't give the titles. I'll try to follow up when I get home.
YoYo Ma's recording of Dvorak's Cello Concerto on CBS Masterworks is a must have for me. I have others also, but this performance is my personal favorite. I agree with the Du Pre recommendations. She was truly amazing.