The Fostex TE-05. I don't think I ever really known what reference sound is suppose to sound like. I always thought it was something like the RE-400 or HF5 (bother have glorious mids and treble, but severely lacking on bass). Well, the Fostex is a different beast. Yes, the mids are nice (not too forward or richly thick like the V, but not thin either), treble is just short of being harsh to my ears (great extension), and it has bass. I mean bass you can feel. Not basshead levels, and the bass is not always sticking its head out depending on the recording, but usually it is. And that makes the Fostex a very special earphone to me. thickness of the sound is somewhere in between the GR-7/Doppios and IM70 (leaning toward more thick than lean in sound).
IM70s is still the thickest sound I've heard in a in dual dynamic, and the bass has settled down marvelously! It's still a strong mids iem with great bass and highs. The V is more lusher, richer, refined, and thick in the mids than the IM70, but with less bass and less highs. I've stated earlier that it's what I dreamed the RE-262 or RE-400 sounded like, because it definitely has that bass kick I like (although it is less than the IM70). I can't add anything more to the H3 than what Ds already stated.
So my earphone rotation now is mainly H3, TE-05, IM70 and V (depending on my mood). I do get the DN-900, AX30, and AX35 in somewhat, but now a lot. I'm talking about universal earphone rotation.
At home, however, I do the AS-2 quite a bit and V6. And I also get my headphones some good time over the weekend, especially the HP50, On1, and X1. The TE-05 is with me today at work. I think I have all sound sigs covered that I really like. Fighting hard, however, not to buy the FX850 (never heard a better timbre than that all wood driver earphone). This may be a losing battle. :-(