While I'm just as excited as a lot of people here to figure out how HifiMan differentiates their product line, we should try to remember that the driver is just one part of that. Take the Focal Elear and Clear as an example, a tweaked driver and different pads made the Clear significantly better than it's predecessor. Admittedly, HifiMan brought this on themselves thanks to their advertising, constantly shifting product line and that comment about the Susvara costing 6K because it sounds good. To be fair, I speculate that HifiMan makes a new product whenever they make significant improvements in manufacturing or come up with a tweak they want to implement. Audeze does this every few years, but don't change model names and Mr. Speakers makes upgrades available for older models. Keeping up with the market and keeping existing costumers happy is very difficult. I'm interested in the Arya because I really liked what the HE1000 was capable of in terms of low end extension, imaging and resolution, but the treble was too elevated. The measurements of the Sundara, Susvara and Ananda seems to indicate that they're targeting something akin to the Harmon target response curve these days, which would be perfect for my preference.