Imagin: Since your are going to free motion quilt your projects, the most important thing would probably be the harp size. The only comparatively inexpensive machine I know of is the Brother 1900S, it has a 9" harp which can accommodate a king size quilt. This machine has only a straight stich but for my purposes I don't miss the fancy stitches. Probably a decision you have to make depending on your planned use.