Next 4 questions:
1) what is Your source gear (to know amping and impedance-match needs)?
2) what file quality You mainly listen to (good IEM can`t really "shine" up to its potential when using lossy low-quality files)?
3) how You like to wear Your IEM (cable) - over the ear or straight down?
4) do You need often to remove and put back on Your IEM (to know if foam tips are ok or not, it affects SQ)?
If You want to have safe buy, then penonaudio is one great place to order chi-fi from.
1. It'll have to work with ordinary weaker source, that is to say stuff like my Samsung Galaxy S9+ phone, or my not too powerful tiny StarTech USB 96kHz DAC, or the Laptops Audio out ..... or if I can get that, a good BT extender (to eventually work cableless). I'm not an extreme audiophile ... but I do like clean, nonmushy bass and clean, non chirpy/shattery highs etc .. i.e. the usual things nobody really wants. Of course I get that "taste" is very difficult to cater for, but see it more like a general quality request for a thing that works with those not necessarily very audiophile sources. I also do have an older iBasso D10 amp and some Fiio X5 or soemthign Audioplayer somewhere, which sound pretty neat.
2. A lot ... from Youtube across thing slike 320 or VBR mp3s to FLACs. But I'm not the audiophile that considers anything but FLAC good .. I'm quite happy with less. I like vivid, energetic sounding headphones, but without too much crazy (which would get on my nerves after a while).
3. I normally have them straight down. Is over ear annoying a lot of people? It's just not something I used so far.
4. Yes they go in and out quite often ... I like my comply replacement tips the most ... the always fit really well in my ear, while rubber, plasticy "mushroom" shapes tend to be uncomfortable for me .. or simply fall out, even if I tried various sizes.
Addendum: I currently have two inears I use(d) .. the Optoma NuForce BE Sport3, which is my go to bluetooth inear which to me sounds quite nice with comply tips, and an Entymotic HF5, which sounds a bit flatter, but which I had bought because people raved about how isolating they are .. and they are nearly nice with that .. but they have a downside to me: their filters clog up extremely fast .. I dunno why, I have no issues with any other inear. The clogged up one becomes totally silent then.
Does that help?
BTW thanks very much for looking into my request, I know how irritating "what's the best xxx" requests are