I haven't quite figured this one out. I thought I'd like a machine set in, but now I am glad I didn't cut a hole in my table. I like moving my machine around to fit my needs at the time. I'm a fidget-er anyway, and I re-adjust the machine and my chair and the foot pedal all the time! Plus, at times, it's easier to pivot the machine than the quilt.
So, I haven't answered your question at all.... But I am interested in other responses...