I didn't realize you could have a midarm on a frame, how does this work? I have obviously confused the descriptions, because I thought a midarm (like the BL Tiara) was a large harp machine set into a table, but with the machine set the opposite of how a DSM is set up. How large a quilt can be quilted on a mid arm with a frame? How big is the frame? Any idea how the price of this set up compares to a midarm in a table? Just for example, Of course true cost would depend on brand, dealer, sales etc.