Hi Julie, I followed up on your PM to me, but just to summarise here for everyone else, yes, I would recommend the MG 6620 - this is the latest Canon model and is supplied by all the major edible printing retailers. The only downside is in the fact that it is a bottom only loading printer, meaning that the icing sheet needs to curve a little more whilst printing, increasing the slight risk of the icing peeling away from the backing. This is relatively uncommon however.
Hope this helps!
James