I'm not sure why anyone uses anything but the white filter. With the other filters, it's literally no different than listening to headphones, after plugging your ears with some sort of filler. I've never heard of anyone doing that ever, and so I don't see any reason to fill the IEM sound tube with filler either.
By the way, is anyone getting a little tired of the sloppy loose nature of the bass on the SE846? I wish it were more resolved and faster, but I'm not sure that' spossible in an IEM, especially an IEM driven by a cell phone or mobile player.