You have to evaluate the line up as Magnepan views their customers and what they believe are the customer's respective budgets. The 3 series is a compromised design based on what Magnepan believes most customers will bring to the table in terms of equipment quality and room size at the $5K price point. The one series a couple of notches below that. IMHO Magnepan has much less interest in the 20.1 than in the other models because it's too expensive and too demanding of both space and equipment for the average Magnepan buyer, nor does it have the cache to capture the blank check gotta have the latest and most expensive TAS approved gear, Magico comes to mind. The 20.1 exists because Magnepan needs a flagship product and a means of retaining the generally few customers who want to move up the line. Used sales don't count as far as Magnepan is concerned. However, I do believe that the 20.1 will likely get the all QR treatment if for no other reason than to standardize production techniques and materials. Whether or not they revise the crossover is another matter.