I have used hoops, the PVC squares, the old fashioned hang from the ceiling type ( great for small spaces if you don't mind quilt being part of your decor for long periods of time), old fashioned 2x2 type that rests on kitchen chairs, and now a Grace Quilt ez44. What i use depends on size, space and whether it is a communal quilting project.
That said, I love the Grace frame because the tension gears and the 3 separate poles for backing. batting and top. mean i don't have to baste it together. It appears that Michael Flynns machine quilting set up is similar. When using the hoops and pvc frames it does help to know not to pull it taut.I learned that from QB and it did make the last project go so much faster but do have it well basted if doing this one.