I have a Sweet 16 sitdown that I really like. It is an update of the Handiquilter 16, adding some more electronic controls. Are you looking for a frame system or a sitdown model? I chose the sitdown because of room and because of the way I like to touch the fabric while I'm quilting. The huge throat is wonderful! If you go with the HQ table, you'll need to add some work surfaces to the sde to hold the bulk of a big quilt. I just use another sewing table, but you can be "wings" from HQ too. The basic system I have goes for $5000 plus or minus, depending on what extras you get.
Pam