I have the Brother PQ 1500s on a Gracie II frame. It is more of a challenge on the frame but using it off the frame it is real smooth. On the frame it is more sensitive, and a bit of adjusting may be needed, such as, tention and quilt height. Once the adjustments are good, it is smooth. I only have a 4" - 5 1/2" work area, so there is a lot of rolling. When FMQ on the table there is a bigger playing field. I decided on the Brother because of the local dealer for future service. - I bought mine new at a sewing expo from a local vender. Got the show price. I think, $600. Then 9 months later I found one on Craig's list with a frame for my sister and she got the pair for $400. If I have the oppertunity to get another one used, I will concider it. One for the frame and one for the table.