I tried the bi-flange and now using t-500 comply. I can hear it when I use a stapler or when the door that is on the other side of the wall of my office closes.
The bass on this is quite different than any IEM I've heard before. Some songs/parts sound absolutely amazing and the best I've heard but then at other parts I don't like it. Trying to figure out what it is, but at this moment I think it might be the mid-bass.