Mine are over 3 months old now, creaking still here (from the very beginning), but a lot less noticeable, maybe the connection points to the carbon is fitting better over time and use.
I'm too evaluating the HEK v2 (and I have HEK v1 since a couple of years), but I will 99% keep them both.
Utopia IMHO is still superior (by a quite large margin) in mid/vocals, transparency and overall "liveliness".
HEK v2 has that smooth and laid back presentation that I love so much with the HEK v1, but with a little bit more dynamics which is very welcome, even if still far from the level of the Utopia. IMHO.
Simply put, two different cans and both TOTL. One thing though that HEK (both v1 and v2) can do better, is the sub-bass extension, these cans can really make you "feel" the 20Hz..........