@Flysweep, try the new Earsonics biflanges. They are much more comfortable, to me, than the earportz torture devices. I found on the W4, the wider the sound bore of the tip, the better the midrange/treble response. I also found some benefits with adding resistance, so that's something to play with as well. Congrats and have fun.
Perfect, thanks sgs.. this is exactly what I needed to know. I gravitated toward the "conical," white single flange tip because it provided the best midrange & treble presentation... and you know what, that's where I've seen the greatest fluctuation in sound when tip rolling. Bass presence has never been an issue (as long as you had a good seal), but certain tips (i.e. the bulbous, gray tips) did tend to warm up the sound (lower mids) excessively, smear the presentation, or force the mids unnaturally forward (i.e. the opaque triple flange with the long stem). I've got a clear triple flange silicone tip (which UM sent me, for some reason, along with a Miracle refit) which is so comfortable, but again, pushed the mids too forward for my tastes.
The smaller comply tips (in stock form, I haven't trimmed the overhang yet) have also worked surprisingly well in providing excellent balance between the bass, mids & (notably, the) treble.
For clarification, you're talking about these, yes?
Edited by FlySweep - 7/28/12 at 11:45am