I guess it is a matter of preference. I prefer buttercream. You can make just about any kind of border or flowers with buttercream. Here is one below that does cala lillies. I love all of her videos on how to make flowers with buttercream. I have nothing against fondant because I have seen beautiful cakes with fondant. I have never tasted fondant but people that I know who have say they always take it off their slice of cake and never eat it because they do not like it. I guess that is why I never tried it yet.