Mark2410 posted a review of the Gemini HD IEMs. Sounds like the mids are fantastic.
HiFiChris posted a review of the single BA driver IEM over on Head-Fi.
Pros: non-“sterile/boring” single-BA sound, smooth and musical, good tonal balance
Cons: not too many competitors but those that exist are also good
Crabdog has a review of the Lyra IEM on Head-Fi. He believes these are a great entry point for budget minded folks.
Pros: Lightweight and comfortable, price, great treble
Cons: Bundled silicone tips, L & R markers
Twister6 has posted a new review of the Westone W80 IEM. This is a 8 BA driver IEM with a standard dual bass, dual mid and quad high configuration.
Pros: re-tuned sound w/more clarity and higher resolution, very compact shell, premium ALO 8-braid hybrid cable, new accessories & travel case
Cons: price, new cable has some microphonics.
Jude from Head-Fi has a quick review of these incredible noise cancelling headphones from Sony. The video review is linked below:
Redcarmoose has a review over on Head-Fi of the RM305M IEM. It’s a budget IEM. What can I say? The shipping may cost more than the $10 IEM.
Pros: Revolutionary Aluminum Construction Elements Creating A Dynamic Listening Experience
I suspect that the cons are a bit more than Redcarmoose has stated.
Leaky74 posted a review of the tweaked ER4 called the ER4-XR over on Head-Fi. Generally speaking, if you want extreme detail and a ruler flat SQ in your IEM you buy an ER4. The only complaint over the years is with the bass response. This new version has tweaked the bass up notch to address this complaint.
The added bonus of having these crammed down your ear canal is you receive a level of isolation and seperation which is unparalled in the industry.
Pros: Stunning levels of real detail, clarity & separation.
Cons: None to speak of; maybe a little clinical for some.