Only brought it up because I wanted to make clear that I literally spent very, very, VERY little time with the UERMs in 12 days (!), that's all. So allow me to not talk about an IEM I, er, just don't feel comfy talking about...yet, all right? Edit my posts if necessary! (seriously)

Never heard the ER4P, only have the ER4S proper. My sometimes rather frustrating experience with the 4S tells me that many people have not heard the true sonics the ER4S delivers or is capable of—the only IEM I've cared to search the right tips for for quite a bit because when the sonics were right with this most 'temperamental' IEM (fit-wise), they're utterly impressive.

Main differences between the UERM & ER4S: UERM more convincing/realistic bass, though the 4S' bass is uniquely textured/delineated; mids are, overall, a toss up, but I still feel the 4S have the slight edge; 4S' treble is the best/most convincing I've heard in any phone; don't know if it's a crossover thing on the UERM, but sounds throughout the whole spectrum flow more naturally on the 4S.

Chain/Sources: Sony ZX1, 4G & 5G Touch, MacBook Pro > V200 (with onboard DAC).

Actually you hit on the two of the main issues I have with the UERM.  Treble doesn't always have the most natural timbre and the crossover does get a bit in the way overall cohernecy but it is the best three way implementation I've heard.  Two ways don't bother much if at all.  Most just piss me off after 5-10 minutes and I quit.  The crossover also possibly gets in the way of the clarity/blackness of the UERM which the UE4 and DBA02 both beat in that regard.  From memory the ER4S and the UERM are about on par in that regard.  Also from memory, the UERM beats the ER4S on ultimate and inner resolution, inner dynamics and micro transients, soundstage depth and imaging holography (ES5 is the best I've heard for this).

I'm tempted to find an ER4S just to do another comprehensive comparo so people can know what myself and some others hear.  FWIW I've never had issues w/ fit on the ER4.  I've always had bass extension and usually better isolation than most universal or even customs.

Music, feel free to start a thread on the FAD LAB I if you like.

Btw, the group here is pretty split between HD800/UERM folk and orthodynamic/lusher IEM folk (Westone ES5 is still my preferred overall for just listening).  There's a few Stax users still lurking too, nobody's perfect.     You should consider ditching that V200 for a Lynx Hilo one of these days too.   

Anax, if you want to do a comparison I can let you borrow my ER4 for a bit. So long as you have something hanging around that I could stick in my ears in the meanwhile. 

Yes, I just need to find my misplaced P-to-S adapter. I might have lost it at the meet actually. I'll PM you.

Ok, trigger pulled.

"+2/-4" now? — what a disappointment. Could we possibly make it "+4/-16" instead?

FWIW, just checked my V200 — it states "Made in Germany by Chinese labourers"

Anaxilus, completely forgot to comment on the LAB I — Don't think I should be starting a thread as no-one would really be getting these budget IEMs, and I very much doubt there'd be much interest, tbh. It's likely, though, FAD will have (an)other version(s) of it. But FYI, these sound nothing like the FIBASS — this is a dual-BA IEM with no crossovers; they use a "full-range dual balanced armature driver". But, never mind the specs (and marketing), the LAB I is the best phone I've heard. There.