If you already have a Janome, the Janome 6600 ($1800.00 - 2000.00) is a wonderful workhorse. It comes with Accufeed, and quilts kingsize without difficulty. The throat space is a generous 9inches and the machine can handle anything you do. However, that being said, currently I am also looking at the HQ Sweet Sixteen. It is a table mounted, sitdown longarm with a throat space of 16" ($ 5000.00 - 6000.00) My reasoning is I want to keep my Janome 6600 for sewing and piecing and use the HQ Sweet Sixteen for quilting. The one thing I have learned about asking about machines on the board, is, that you'll get as many differnt opinions as there are different machines. You really need to test drive different machines to make a informed decision.