I use 4oz cylinder containers to keep them organized and away from dust. Don't need more storage than that. Just looking for open IEM options, smaller than the isines models.

Everything I've seen in the past about the FX850 is that they're vented, not open. For JVC, only the older FX700 was open. I could be wrong as I havne't heard them, but the general consensus is that they isolate about the same as poorly-isolating closed iems. Supposedly the FX850 isolate more...

Everything I see online is that these are NOT open back. Will give them a try anyway. Placed an order.

I have many IEMs, but the Sony aren't open; just poorly isolating. I have a few other sealed iems also with poor isolation, but they don't let enough sound in for office use. EN700 is a closed IEM? Still looking for something more open, but smaller than planars.

KZ ZSA has heavier isolation - far more isolated than my ex1000. It also arrived with a damaged right iem - sounds quiet and tinny. Using the left-side's cable, the right iem remains weak. Have to return.

Checking it out. For what I want open IEMs for, these may work perfect. Thanks! Also researching the R1.

Dunu TITAN 1 looks promising, but I wish it had removable cables. TITAN 3 and 5 are much less vented.

Still haven't seen any more recent "discussion" than this thread - been searching once a month for what seems like eternity. While I like my iSines, looking for something smaller/lighter, open, and is an IEM. In my experience, inner-ear allows for less sound bleed for the same listening volume...