Having had (and tried) a lot of IEMs over the years, I currently have the following:
-Etymotic ER4SR: The best compromise between frequency response, technical performance, price and sound isolation. I'm still struggling a bit with their comfort using tri-flanges (the new included bi-flanges are much more comfortable, but at the expense of darker and more confined sound). If I could only have a wired pair of IEMs, I would possibly choose these.
-Audeze iSINE LX: Deal of the century at the Valentine's Day offer ($59 plus + shipping at my country), basically my "mini open headphone" with TOTL technical performance and terrible stock frequency response, as most of the Audeze products. With the proper amount of PEQ, they're truly endgame for me, spectacular planar bass (linear under 20 Hz), top tier resolution, open soundstage and ultra low distortion. Did I say that it can handle up to >130 dB?
-AirPods Pro: The ones I use 90% of the time (mostly indoors, controversially). Great balance between convenience, comfort, features and more than adequate sound quality in terms of FR and technical performance. Sitting in front of the Mac with a DX3 Pro next to it, lying on the bed... You name it, I have these in my ears most of the time.
Honorable mentions (both owned and borrowed from friends):
-Shure KSE1200: Easily the best technical performer, married with good but not perfect FR (great extension on both ends and lack of any kind of bothersomeness in the entire range, just as smooth as the Etymotics), although they're very tip dependent regarding to sound, only foams worked for me. Comfort was good, build quality so-so, but the whole energizer thing was such an inconvenience for a plug&play listening experience and a deal breaker for me. It clipping a lot at high volumes too, so not worthing the hassle, unless you pursuit the best technical performance with proper noise isolation.
-Campfire Andromeda pre-2020: Great spacial clues for a closed IEM, competent technical performance with good high extension, but subdued pinna gain, mediocre bass and not so great/realistic timbre to my ears (maybe a BA related thing, but the ER4SR definitely doesn't have this problem).
-JVC FDX1: With proper EQ around 2 kHz and 4 kHz and no filter mods (despite the overall consensus), these are outstanding and easily one of my favorites. Crazy fast bass and highly technical performance for a DD, overall a better listening experience compared to the Andromedas once EQ'd. If it weren't for the iSINE LX offering, which is even better after EQ, I'd probably have one of these. Great deal for $200 at Drop, but just with EQ.
-Etymotic ER2SE: Very similar to the ER4SR (from memory) and way better that the ER2XR I sold yesterday, hell of a deal at the current Adorama price, but I don't need another Etymotic having the ER4SR.
Another ones I had:
-Audeze iSINE 20 (I regretted selling them, at that time I wasn't too involved into parametric EQ, hence I took the offer of the iSINE LX, which has the same driver arrangement minus the impedance)
-Audiosense T800
-Dunu DK3001 Pro
-Etymotic ER2XR
-IMR R1/R1 Zenith/RAH
-QKZ VK1
-Massdrop Plus
-Sennheiser IE800 (my first expensive IEM)
-TinHIFI T2 Plus/T4