I bought a Singer Slant-)-Matic 403 Special in 1960 Like it but have wanted a portable Just bought a 3160 QDC Janome. The first thing the teacher told us was to get a bigger screw which we did. I really do not like the flat screwdriver they furnish so use one of my own most of the time. I do wish they made all of them with a deeper throat. The dealer did say if I wanted to trade up I would have one year to do so getting the value I paid off another one. Many of you seem to have the 6600 one. I am really just a beginner quilter. It is adicting.