Got my package finally today after only 7 days shipping within the USA... LOL
My first impressions are that the RW-3000 is a re-tuning of the RW-2000. The shell has some very small differences in the way they were CNC'ed, all aesthetically done. The overall bud itself is exactly the same IMO (not sure if the driver is different though). The cable is thicker than the one that comes with the RW-2000, but only because it is not woven as tightly (still a fantastic cable). I prefer the case that comes with the RW-2000 because it is smaller overall, but easy to put the buds in. The one that comes with the RW-3000 is huge but doesn't have as much room inside to fit the buds (it is still really nice though).
As for sound, it is really different from the RW-2000. They decreased the quantity of bass (but it is still boosted compared to most other buds); especially the upper bass which is what gave the RW-2000 the much richer and fuller sound. On the other hand, this also makes the RW-3000's timbre more accurate sounding to my ears. They boosted the treble quite a bit (or at least parts of it), giving exceptional clarity and airyness. No longer can these be considered warm but with a boost to pina gain. There IS a boost to the pina gain, but I don't believe they took it further than the RW-2000 had; it only seems that way because they decreased the bass presence. I would call these neutral to bright on the macro level.
The mids is where the massive improvement is on the RW-3000. Because of the boosted treble (some might find it too much, but I don't at all), and the revealing nature of the presence region, mids are no longer as dull... I wouldn't say that they are more forward than before, but they have gained an incredible amount of clarity.
Someone asked me if they were worth the $100-$150 more that one pays over the RW-2000, and I would say that it depends if you like the signature or not (they really are now a different signature than the RW-2000). Also, are they worth $300 in general? Well, again I would say that depends. For me, I say yes, because overall these sound better than most single DD IEMs I have heard in this price category (and somewhere above too). I WILL say that so far they are better in almost every way than the RW-2000. I would
ALMOST put them up against the Chaconne (as it stand right now). They seem pretty close in sound, but with more quanty of bass, and a bit more aggressive up top. Clarity and Micro details seem to be there (I'll know more after some A/B'ing).
But, I will share more when I have had a chance to listen more. Sorry so long!