Can you recommend some classical CD's for me?

Any of the Howard Hanson CD's done on Merucry Living Presence label would be a good start.

This might be a good starting point. The author is a music professor at the University of Washington and has been a very patient classical music mentor to local audiophiles:

http://www.durand-tonearms.com/Support/Greatrecordings/Classical%20Music/classicalmusic.html

Steven Isserlis has a Saint-Saens disc on redbook that has the 2nd cello concerto and the 2nd cello sonata plus Joshua Bell on one piece. He also has a redbook CD called Cello World that does have some but not a lot of vocals.
If your are familiar with Rostopovich his version of Dvorak's cello concerto is my favorite.
While not positive I am fairly sure there should be an SACD of Jacqueline du Pre's version of Elgar's cello concerto.
For guitar check out Christopher Parkening,
Also Julian Bream and John Williams did a couple of albums together.
Would also recommend Laurindo Almeida, and Segovia. You can check them out on Arkivmusic.com and see what they did doing.
Hope this helps.
I know it only scratches the surface but one has to begin somewhere.

This excellent reference tool would be a good start: “The NPR guide to building a classical CD collection” by Ted Libbey

The MA recording of Bach Cello Suites by Martin Zeller is a great version and beautifully recorded.

http://www.marecordings.com/main/product_info.php?cPath=47&products_id=142

The two Haydn Cello Concertos, played by Truls Mork on Virgin, are an excellent and very well-recorded version.

http://www.amazon.com/Haydn-Cello-Concertos-Franz-Joseph/dp/B000025XWR/ref=sr_1_2?ie=UTF8&s=music&qid=1299638877&sr=1-2

I would choose these as sure things for a start to a great classical collection.