I have a Viking Megaquilter that I just love! It has a 9 inch throat, straight stitch only and is a pleasure to sew on!!
It also fits in the Inspira quilt frame for quilting up to a queen size quilt, but is great as a stand alone machine on a sewing table. It does a fine job for straight line stitching and free motion quilting!! I paid $2400 for the whole package, 2nd hand machine, frame and stitch regulator. Around $1200 for a used machine would be a good price(without the frame or stitch regulator).