Just dropping in to say I bought the Havi B3 Pro-1 after extensively scouring for hundreds of pages every post that compared and talked about the B3 and the Ostry KC06. Very satisfied with my purchase. As others have said, this IEM is extremely fit dependent. I have found that after swapping in and out every tip, I agree with the general consensus that the Sennheiser double flange tips (now included in every package) are far and away the best tips (for me) in both fit and sound quality. I'm very glad that this IEM was not backed by senseless hype. I had the impression that most of the people who corroborated it as a good IEM had very discerning taste and constantly gave detailed precise evaluations of its sound and performance.
One more thing I'd like to add is that while everyone seems to recommend a good amp to drive it, I am using a very cheap Fiio E7 DAC+AMP right out of my computer and it sounds very good. I have no doubt in my mind that a quality amp/source would elevate these to the next level, but even for the more casual listener who doesn't quite own the best most expensive gear, these still sound fantastic and do not disappoint. Part of why I jumped on these was that I had a feeling that even with my relatively inferior set up, I was pretty sure that they would still sound good. Thankfully I was right. The scalability with better hardware is simply a plus as in a way it's simply hedging for the future. They already sound great now, and whenever I do decide to purchase better equipment, I already know that they'll sound even better.
