I am not the OP and it will be a few years at least before I can purchase a quilting machine. But I appreciate all the replies so far.
I am heading to Puyallup and plan to test out as many long arm set ups as I can while there.
I am in the interesting position of knowing I will be moving this summer and when shopping for a new house, I will be considering which ones have room enough inside or a workshop that can be my quilting studio. So as well as testing out the various machines, I will be getting the measurements of how much space is needed to properly accommodate the various machines.