I sew on a Janome 8900 QCP and it has an auto-thread cutter. I thought it was mainly a feature that I could take or leave. I used it a bit, but then stopped. A couple of quilts ago, I started using it while FMQ and I love it. Now, I would say it is a must have item. I don't use much when I am piecing, but a its a huge thread/time saver when free motion quilting.