I think you will find that the Silhouette, because of fusible required to cut the fabric, basically means raw edge applique too. Not sure how the Scan N' Cut treats applique.
Also--for those of you that oversize blocks and then cut them down--that works great on some blocks, but would mean cut off points on many(ask how I know?!). Because the Go does such an accurate job of cutting the pieces, the result is more accurate blocks.