Looking for best isolating (passive) universal IEMs, hopefully deep inserting and definitely with a replaceable cable (MMCX preferred). What choices are there? Shure SE, Westone W and UM pro fit Comply P-series foam tips. I have never worn any universal that blocks more than these babies. I've tried dozens and dozens of silicone tips and flanges and none come close (for seal, wearing comfort and isolation). YMMV, of course, which is the reason I'm soliciting for suggestions. Is there anything else out there? My main use is biking, commuting, gym and lots of noisy environments, so passive isolation and excellent fit are paramount. However, as these are daily beaters, I don't want to go through the universal route, as it jacks up the price so much (locally, where I live, outside US/UK).