Hi Onebyone.....I have the Brother 1500 and purchased it with the Grace quilting frame. I quilted with this set-up for about 9-10 years. I had also purchased the additional "boards" that you put on the frame that enable designs like zig-zag, half circles, etc. The set-up worked very well for me and I especially liked that I could keep the frame a "smaller size" when I was doing mainly crib-size or lap quilts. Then, when I needed to do a larger quilt, I just put on the extra pieces. I am still using my Brother 1500, but am interested in selling the quilt frame along with the "boards". If you are interested at all, please PM me. I can try to locate additional information and send it to you. I'm located in Albuquerque, NM. Thanks.
The only thing that took a little while to "perfect" was the sewing speed.....it takes a bit of practice to move the carriage the machine sets on with the speed of the stitching.
But, I used it for many years and produced many quilts! Thanks! Nora