I use Pettinice Rolled Fondant. At first, I used to tell people that fondant was not enjoyed by all and they might want to remove it, but although Wilton fondant is vile, this stuff is not bad at all. As it turns out, I actually have people who go back to the cake table specifically to get the decorations and have extra bits of fondant! When I've said it isn't very good, they look at me like I'm nuts, so now I don't say it anymore. Maybe it is just a self-fulfilling prophecy anyway! (Personally, I'm not fond of crusting buttercream) The white Pettinice tastes a lot like marshmallows and the chocolate is like Tootsie rolls. I get the white in 15 lb buckets form Pfeil and Holing at http://www.cakedeco.com
It is much less expensive (even with paying the shipping) than I can get it locally. I usually get the chocolate from Sugarcraft.com as no one around here carries it at all. It is very dark brown and can be mixed with white for a medium tone.
I'm sure this is more expensive than making fondant from scratch, but since I need everything I use to be kosher, the Pettinice works for me because it both tastes reasonably good and is kosher certified. It is virtually impossible to make fondant from scratch with kosher gelatin. It has been a huge disaster each time I've tried. I may try MMF at some point, but kosher marshmallows are hard to find too...
I'm a newbie and have much to learn so take this as a not-very-expert opinion. I hope to be able to post pictures soon!