>>1945472i had it up on my aeon 2 opens earlier and it's not bad, even though they sound pretty narrow compared to most open sets. because of the bass response on them, the heartbeat is a lot more audible, but it's not much of an improvement overall because it also emphasizes a lot of the low-frequency proximity/popping/vibration in the rest of the stream.
the spatial effect is definitely better on my k702s, but they let in a lot of outside sound, and i can hear my own PC leaking in, though not quite as loud as hers is in the stream. with their bass rolloff everything else sounds better, but the heartbeat is quieter. i guess you can't have it all.