Seriously considering a pair of Custom FIBAE Black's. Have been having issues with all universal IEM's I tried in my life (always seem to fall out). Just wondering, how would those compare to a Sony 1000X NC headphones when it comes to filtering out noise? I suspect soundwise / musically, the CIEM's will rule over the NC hp? Some part of me is also hoping those CIEM's would be able to replace my current closed-back for home use (Meze 99 Classic).. But probably, soundstage wise it wouldn't? Happy to take on any advises you might have regarding the purchase of those CIEMs or not?