Impressions need the music listened to for best understanding.
I'm pretty impressed with the almost 'stat-like presentation of the Sundaras, especially in the treble. For some music, a bit more bass would be welcome, so paired with something like the FiiO Q5, which has bass boost, works in their favour. They aren't as able to present a sense of depth as the Massdrop Focal Elex are though. For the Aeon Flow Open, you'd need to switch to the black inserts to compare, as the stock ones make them sound more muffled to me.
Would be interesting to see a comparative review between these and the Ananda's (some speculate that the Anandas are actually just HEX V3), also a review of the HE1000 V2 vs. the Final Audio D8000 would be worthwhile but that would be the subject of another thread.