right now I have to say the ScanNCut for quilting. I purchased it for applique and have had a 10% success rate. I will keep trying because I spent $450 on it.
There are are so many things to remember (blade depth,pressure,direction of design, etc.). The time it was meant to save me on cutting the fabric is being spent on trying multiple times and then cleaning the mess left on the scan sheet. I know I must be missing something.