Had to chime in here. I purchased a pair of HF5s on Amazon's lightning deal. I happen to get the last pair and even confirmed through an email. Then for some reason the vendor running the lightning deal charged my credit card for the full 109.99 regular selling price. I called Amazon and they looked over my account and promised a resolution. As it turns out, they found the mistake and as a gesture of good will, they refunded my account the full purchase price of the HF5s. So I got a brand new pair, already delivered via Prime, for free. Amazing customer service.
Anyway, I am very much liking what I am hearing. I tried both of the triple flange tips and just could not get a desirable seal. The best tip for me has always been the Comply Comfort Fit large. It doesn't insert nearly as deep but seals completely for me. I have completely different ear canal shapes left and right. Bass on these is great with a proper seal. Highs and detail are amazing. I am beginning to see what all of the Ety hype is about. Looking forward to much more time with them.