Honestly, aside from the early hybrids of t-peos and astrotec, which were quite underwhelming, and the dunu dn1k, which I thought was good, I haven't listened to any of the more recent hybrids until the k3 pro. Personally, aside from the technological advance standpoint, which probably draws most of the people towards hybrids, I don't think that people should necessarily expect hybrids to be superior over even single dynamic or BA iems with proper R&D involved. Right now it feels like a lot of Chinese manufacturers release hastily new products with random drivers mashed inside and the tuning is an afterthought. K3 is an example of that with 3 different versions being released in a very short period.
The k3 is not bad but at full price I would be quite disappointed to be honest and even now after my early short audition there are a bunch of non-hybrid designs I would pick over it without any hesitation. That's the thing with chi-fi - there are so many new models being released on weekly basis that it's hard to follow them and in the end of the day it's easy to create hype with limited number of reviews and impressions and zero measurements. That's why nowadays I control myself and don't jump the gun every time the yet another giant killer has been proclaimed as it's rarely the actual case. I don't try to downplay anyone's contribution in the search of higher audio discoveries, but rather that people should tread carefully around all the new chi-fi from little known brands to avoid later disappointment.