I have a Silhouette SD, that has now been replaced by the Cameo, which cuts 12" paper and has a few other bells and whistles. There is no doubt in my mind that the Silhouette is the better buy. There are no cartridges and you can use any font that is on your computer. The software is free, if you want to take a look at it, go to the Silhouette website and download it.
In addition, the sil has the print and cut feature that allows you to print any image then cut it out. I use this feature for edible images. Yes, you can cut icing sheets and gumpaste on it. If you want to use it with gumpaste, you will need the extended blade that Linda McClure sells, the original blade does not work. Can you tell that I really like mine? HTH