I was horrified when I actually saw the size of my H3 and thought no way! that's just silly. But once you find the right tip they are surprisingly comfy and you just forget you are wearing it but I got a couple of funny looks on the train today.
Isolation is also quite a bit better that I first expected.
About the sound, they are really growing on me. They are the first iem that manage to nearly replicate the sound of a full size closed headphone.
Thanks for the impressions.
Can you elaborate a bit about the isolation ? How good is it ? With which tips ? Compared other in-ear headphones ? And if it is improved with vent blocked.