05-16-15: EssentialaudioThe OP, who stated that he's aware of the technical differences, was asking about end results--how much of the SA performance do you get from the Maggie 20.7s.
Johnnyb53, the technologies of the speakers are entirely different. Planar magnetics with voice coils glued to the membranes ... blah-blah-blah
I never said anything about the underlying technologies, so how can you presume to "correct" me about them? I offered up relative dimensions and purchase prices, which were germane to the thread's original post. If the higher line SA's outperform the 20.7s, it's not a fair comparison given the difference in radiating surface and cost. At that point, the discussion would turn to whether the additional cost is worth it to the OP.