I have a brother 1600p which has a 9" throat mounted on a Grace SR2 frame. Frame is limited to 88" wide frame but I find it works very well. Very few tension problems. Now with a 9" frame you have to do a lot of rolling but if you plan things out it works nicely. If you do a long quilt you will be limited to about a 4" border since that is all the throat space you have left. But twin size, lap and baby quilts work well. Sure I'd love to have a 18" throat but can't afford or justify the cost.