I've had a 6600 for about 4-5 years now and love it but have just bought the Horizon 8200 to put on my Kookaburra frame. It has an 11" harp space and looks huge. Haven't put it on the frame yet but sewed with it on the dining room table- quilting DGD quilt. What a dream. You wouldn't believe how much difference that extra 2" makes when working a quilt through the space.