I won’t say you’re wrong, we all have different preferences and experience but there is such a thing as “buyer’s bias”. You buy something new and you want it to work out for the sake of your wallet, or because you subliminally really wanted it. This is why “I just got this today” is generally an unreliable impression and it happens a lot on this forum.
(Admittedly, it's a little funny when someone who's had it for a day tells someone who had it for over a week that they need more time with it
“Hey, audiojunkie69 said this thing doesn’t have bass, but it totally has bass!” Is not the same as identifying exact properties in the sound or where it lacks in comparison to other cans. I was impressed on day one but found some personal issues after almost a week with it.
Like I said, it’s a great headphone at the price and the sound is more than sufficient. It's not lacking in musicality, it just leans more into analytical and thin than what I would consider "listener neutral".
This is coming from experience with cans like the LCD-1, PSB M4U 2 and HD600. I have heard everything the Aonic does well in other cans, but with
more body and a better timbre than what it could provide. I would go so far as to say the AKG K371 sounded more well-rounded, but lacking in the raw detail and resolution these have.
Listener history helps this along, and for all I know you were coming from a Bose QuietComfort! Of course they'd be earth-shattering in that context. If the Shures are the most expensive cans you buy, they will blow most other wireless/NC cans away.
For anyone who has the chance to listen to these, I found Sheryl Crow's "All I wanna do" almost has a divet carved out of the sound. The usual tactile weight of the acoustics that come in during the chorus is not very present. The presence of the overall song is reduced, although it has great separation and texture. It was a little dry for a usually poppy track.
On the contrary, a very essential point: I've found that when someone wants to like a headphone, they will. There are very very few "bad" headphones these days, and the brain is incredibly malleable...something that sounds lacking at first can become very enjoyable over time as the user acclimates.
Anyway, please excuse the spiel. I stand by my assessment, and only provide it to help influence other's purchasing decisions. Enjoy your Aonics!!! It sounds like they are exactly what you were looking for, and who am I to take away from feeling like you spent your money well