Hello.
I've been using JVC FX850 for almost three years now, and I love their sound pretty much. However, there are a couple of cons as to their ergonomics and build that bother me.
First, they are rather heavy and therefore don't sit in my ears good enough. I've tried different tips, but anyway it doesn't take much effort to pull them out. Therefore I need to reajust them pretty often when I'm listening to the music, and it gets quite annoying.
Second, as they have an open design and rather shallow fit, it's impossible to reach a good noise isolation in them. I spend a lot of time listening to music on a public transport, and with all the noise included, I can't really appreciate the sound of FX850 - a lot of details (and especially bass) just go away because of the ambient noise and poor seal (even with foam tips, which to my taste ruin the sound by themselves on this IEMs).
I've been thinking of an upgrade lately, and although initially I didn't want to stretch my budget too much, I've started to think about Shure SE846. I've had previous experience with SE215, and though I found their sound rather dark and muddy to my taste, I totally loved their ergonomics and isolation level (might be one of the best isolation levels I've ever had on IEMs), as well as overall minimalistic design and durability. And as I understand from some reviews I've read, SE846 has similar sound signature to FX850 I currently own, but much better. I have no opportunity to test them before buying though, so I would like to get some advice from people who have used both of those IEMs as to whether SE846 would be a decent upgrade to my FX850 (sound-wise and overall) and whether they worth the money (I'm looking into buying a pair of new ones so I'll have a warranty and the unique experience of using something first-hand).
Thanks in advance!
PS. If it's relevant - previously owned Vsonic GR07 BA, but found their sound a bit too harsh and sibilant to my taste...