I have a Janome 6600 and she does a great job at fmq (I am the one who struggles with squiggly and jerky lines). The challenge comes when you have a large quilt and not a big throat area. But it can be done. I definitely wouldn't start out fmq on a quilt. I would make quite a few practice sandwiches of similar fabrics and batting as one of your normal quilts. It takes lots of practice before you will feel confident enough to fmq a quilt. Even STID can be tricky....LOL. Have fun with it and try not to get frustrated as it is entirely different than drawing.