You liked the Betas over these? I have the Betas and aside from the warmth and cable, I thought the 8320s were leaps and bounds above them.. The sound stage is much wider on these. They sound a lot clearer by a wide margin and they scale much better. I don't know how much the superlux is, but the fact that your comparing this to an IEM that 4x more expensive I think gives credibility to just how awesome these are.
Hype train coming through!!! WOOT!!!
I am sure I'm having fit & seal issues.