Hi, I use the janome 6600P. It has the auto thread cutter, and the up or down positioning for the needle,. which I love both options..it has the option of a second higher position for the foot, giving alot more room to move the quilt layers through, without snagging anything, which is wonderful for quilting. Also, the the accu feed foot...it moves all 3 layers together, at the same time, while quilting. I have made a few quilts since buying this machine, and I am a new quilter. The back is as pretty as the front, no puckers, no folds, nothing. It also has the double needle option, for topstitching, which is a must, for me.