I bought a GMQ Pro frame along with my Bailey 13" Home quilter 2 years ago. The frame is very sturdy and has 4 section that can extend to king size. My room will not allow for the King size extension, but I bought it with the intent of having the complete package when I stop quilting and sell my equipment.
It is a very strong frame and would take a larger machine easily if and when you plan to upgrade to a longer mid-arm machine. There is actually about 22 inches between the front pole and the take-up pole, so it will accommodate some of the longer mid-arm machines, which will allow you to do more quilting before you have to roll your quilt.
I have never regretted investing in a good frame.
June