I got the Guthy-Renker set a few months ago -- there was an option to get the whole collection in one shot and get a few bucks off so that's what I did.
It consists of Volumes 1-21 (missing the final ten original volumes) plus "Show Stoppers." I was bummed that the rest are apparently unavailable.
Vol. 1-9 have the black cover design with just Carol Burnett's face. The rest have the white cover with the composite cast photo in front of the drawing of Carol.
I had picked up a couple of the Columbia House versions at a flea market once, and the content for those volumes appeared to be identical.
Thanks for the information Mark. I recently placed an order for this collection with Guthy-Renker. They had an option to get the "Fast 9", wherein they send you the first 9 volumes at once and then it goes on the 2 every other month plan. I didn't see an option to buy all of them, or were you referring to the Fast 9?
Also, regarding the artwork...do volumes 10-21, besides having the original Columbia House artwork, also come in the original CH slim cases as opposed to standard DVD cases?