I have the Grace Z44. Not as easy to load as they make out in the video. If I had to do it over, I think I'd buy the Ulmer quilt frame. Google it to see the features. It is more portable, etc.
I bought something that would not allow any of the quilt to touch the floor, because I have dogs and I feared they would chew it, etc.
The Grace is good in that way. I guess my dissatisfaction with the Grace is the amount of room that it takes up. My quilting room is only 8x10, so this frame takes 3' by 9' of space. If I had a larger space, this would not be an issue.