Janome has a new machine for quilters...Model 3160QDC. It's only been out a few months. It is a dream for quilters, with lots of bells and whistles. Our local quilt shop had it on sale, so you may find it for less than the $799 retail price.
I have three friends who purchased one and they absolutely love it. I don't need a new machine, but if I did I'd get this one. You can check it out on Janome's web site.