Its time for HIFIMan to ditch the 2.5mm Jack connector, with non standard cables, mine are DHC Prion 4S which are on the heavy side the connector can come out. I wish they had a Lemo connector like the Focal Utopia's. In fact it would be great to see the manufacturers agree on a standard connector.
I agree that a globally standard connector would be nice, but until that happens, I quite like Hifiman's 2.5mm connector for the following reason: I use long cables and occasionally this results in me accidently yanking out the cable (e.g.when stooping down to adust volume and then standing up without realising my foot is on the cable!). In such situations, the 2.5mm just pops out with no damage done. With a secure/locking connector, the damage could be considerable.
I've read that HEK V1 users had issues with loose connections, but my HEK V2 has been fine so far (touch wood). If the DHC Prion is too heavy for such connections, then you could try a lighter, superior cable like Toxic Silver Widow - speaking of which, the SQ improvement the Toxic SW gave to my HEK V2 seams just like the SQ improvements written about the Susvara over the HEK. On top of that, I use Roon parametric EQ to very successfully tone down HEK V2's slight brightness as mentioned in comparisons to Susvara. Which leads me to the following speculation:
I wonder how much closer in SQ the HEK V2 would get to a stock Susvara if the HEK had the better cable and some EQ?