I would definitely use FondX again. You can buy it online at www.caljavaonline.com
. I love that it can be refrigerated once it's on a cake. (I've heard that about Satin Ice, too, but I don't know for sure since I haven't tried it).
I bought a 10 pound bucket of FondX for about $40 (including shipping). With that I covered the green & white 14-10-6 round stacked cake in my photos, and the pale blue 8-inch square with the bow. I had about a pound left over after that. I think that's pretty reasonable.
I like marshmallow fondant, but I have a hard time getting consistent results with it and I don't like the finish as much as that of commercial fondants. I will still use it from time to time, though.
I think liking fondant or not is really a matter of whether or not you're willing to chew your icing.
Some people are really turned off by that. I don't think there's any fondant that absolutely everyone will like because there are some people who will never like fondant at all.
On the other hand, I've never known anyone who likes Wilton fondant. Not one person. Even my young daughter spit it out, and she'll eat anything sweet!