I use the manual Go. When I cut fabric to put on the die I cut it 1/2" bigger then the shape. Never cover the whole die with fabric unless it's ugly fabric and you want to get rid of it. If you can keep the lengthwise grain going along the long side of the die. This helps with less stretching of the fabric. The value die I have has many shapes on it so it's a pain to cut for one shape. I prefer all the block pieces on one die like the BOB dies. They are my favorite. One layer cake and I have a complete quilt cut in less then 20 min.