Here is a link to a discussion we had about this same thing the other day
http://www.quiltedparadise.com/qb_demo.jsp
I have the Janome 1600P & I love it- single stitch & does FMQ. I was in the same boat as you- had a machine that I loved w/all of the fancy stitches & really just wanted something with a bigger throat space for quilting.