I'm just coming back from the High End and also tried the Aura, of course. Not my cup of tea, honestly. But of course, I could only listen to it under show circumstances. The fit and seal was perfect, though. It's just pure personal taste, it had too much mid bass (sacrificing sub-bass) and very good but not airy/extended treble imo. The EXT still matches my taste much better. Still a great pair of IEMs that has a clear "high-end" sound. Way way way too expensive.
The real surprise for me was the A&K SE300, this is the real deal! For my preferences the best A&K DAP to date (yes, better than the SP3k, just because of ergonomics and weight). It has the perfect weight and size, and for me the first A&K that's comfortable to hold because of the wave lines on the right side. Really great and it has the same snappy interface as the SP3k. For me the better SP3k and I'd take it over the SP3k any day!
Unfortunately, I was listening also to the Sennheiser HE-1 for the first time. OMG. I think I'm gonna sell my car for this. This is by far far far the best headphone I've ever listened to. They let my try it for a good time, I was lucky as I was the last one in line for some time. It was an incredible experience. Really.