RVC is really popular in the South. I really think is has to do with the color of the cake and the cream cheese frosting. People think they're having something really special.
I've tried a lot of RVC recipes & haven't really been totally satisfied with any of them.
Sarah's-I didn't care for @ all. It turned out dry & not sweet enough.
Paula Deen's-horrible IMO
Cake Mix Doctor-uses choc. cake mix as the base. It was really moist with a lot of choc flavor, but I think RVC needs buttermilk. The color of the cake was a little muddy.
Macsmom's-this is the one I currently use. It gets great reviews. It uses 1 white mix, one dk choc mix, choc pudding, sour cream, etc. It's really moist, but I still miss the buttermilk. Next time I make it, I'll probably add a little in place of the vanilla coffee creamer to try it out.