One thing to keep in mind is that many of the decorative stitches make a lot of punctures in the fabric very close together. Over time, these perforations will act like they do on the edge of postage stamps: making it easy to tear. I used a lot of them on a quilt one time, and then I happened to hold it up with a light behind it and was surprised at how much light came through around those stitches.
They're fine for a wall hanging that won't get much handling or washing, but I'd have second thoughts about using them in a bed or lap quilt.