If you do get a 7700, you might consider keeping the 6600, too. I owned the 6600 and loved it; purchased a 7700 and gave the 6600 to my sister. I missed it so much, that I went back to my dealer and purchased a used 6600 and I have them both in my sewing room at right angles. I do think the 6600 is my all time favorite machine. The 7700 has a sewing arm that the 6600 lacks.