@soix My pleasure. The Arya Stealth is a bit more balanced sounding tonally, where the HE1KSE is a bit more lean. Of course, the HE1KSE is more transparent, dynamic, and faster by a fairly large margin. Definitely more presence overall with the HE1KSE, but it's easy to hear that the Arya Stealth is in the same family. Comfort with the HE1KSE is also preferred.
Unfortunately I haven't tried the Arya Organic. It came out after I bought my HE1KSE, and before I decided to become a Meze Audio dealer. I came from more of the Audeze camp earlier on, so I found Meze to be a nice middle ground between the sonic signature of Audeze and Hifiman, but with a bit of coloration which makes for really engaging listening sessions.