This is my list of IEM ranking, originated from my Concise Multi-IEM Comparison that has been discontinued and now stands as a simplified independent list that will continued to receive update. Scroll up and down for ranking, left and right for sound signature. Note: This is only a personal assessment and far from be-all-ends-all of a guide. It should be seen as as starting point of your own research, rather than an easy workaround that could cost you more down the road. The fact is, there is no simple way to fully evaluate an IEM and certainly no universal consensus that everyone will agree on. This list is merely my interpretation and should be taken as just an opinion and nothing more. ~ ClieOS
[size=small]Scroll ↕ for Ranking. Scroll ↔ for Sound Signature[/size]

*Value of 4.85 (in red) and above have my highest personal recommendation for an outstanding price/performance ratio.
How each IEM is judged: SQ rating comes mostly out of comparison with other IEM in the list - this gives an IEM a rough position in the list. Fine adjustment depends on the 'completeness' of the sound - what kind of sound signature and function (if available) a particular IEM is trying to achieve, i.e. stage monitor will not be judged in the same fashion as mass market / consumer orientated product. Some weaknesses often weight more than others. i.e light bass is better than muddy bass, overly smooth is better than harshness. In general, not offensive weakness is less damaging. Value rating is based on all aspect of the IEM, including SQ, design, build quality, general fit, availability, customer support, warranty terms street price, etc.
Please do not ask for recommendation in this Wiki. Instead, go to the individual discussion thread for the particular IEM of interest and ask your question there.