I don't know if I would be able to quilt sitting down, and when I have the room and the money, I'll be getting the largest throat Bailey(
http://www.baileyssewingcenter.com/), they have, which I think is 20" now. They have a choice in frame or sit down. They have excellent service and great prices, a lot of times, they ofter free shipping and handling to the lower 48 states, which is why before we move to Alaska, I'll be getting my Bailey.