If you can demo them, then demo them and form an opinion.
I have 3 64A IEMs, they are all custom which makes it somewhat a different comparison.
In terms of sound, it’s a step up from the blessing 2 I suppose but I’ll be honest I can’t tell the difference, outside tuning.
People talk about these micro details like leading edges of gutair plucks and etc.
Yeah it all sounds good to me tbh.
However I do like 64a custom IEMs, with the apex system. I can put the most open module in and leave the IEMs in for like 8 hours.
Pause the music and talk to people, order coffee and etc.
Go home, blast the AC and put the close module in to block out the sounds.
But if you are happy with your current IEM stay put, there is no giant leap in terms of sound qaulity, and in some cases you may even EQ down on your high end IEMs to deal with extremely boosted treble.
Custom IEMs, they just fit. Wear them for 8 hours is not a problem .
Don’t have to deal with tips or a head band.
CIEMs are just awesome