@evanatch - I came from the B2's as well (to the V3's), and if you like that sound then yeah, if you can spring for the V6's you'll probably like those more than the other 1964Ears models based on what people here who have them say (and who have heard the V6's and some of the others). The V3's are not as bassy as the other 3 (Quads/V6S/V8), but do have a bit of mid-bass warmth & have less top end (treble a little rolled back ?) than the B2's (based on my experience), they're probably a bit 'mid-centric' (which is not a bad thing by any stretch, they're great to listen to - a really 'musical' enjoyable sound).
I also went from a Cowon X9 (used with both the B2's & V3's) to an AK100 MkII. The V3's were pretty good out of the X9, but out of the Ak100 there's just no valid comparison.
Was the whole upgrade thing (both the CIEM's & DAP) worth it ? Hell yes ;-) I get more than enough usage out of both to have justified the outlay.
Thanks, it's certainly reassuring to hear that the step up is worth it! Hopefully I'll be ready to make that leap soon - glad to hear it's worked out so well for you.
Would definitely still be interested in hearing opinions of those who've heard the DX50 and the V6 together. I've considered the DX90 as well but a much higher price, buggier firmware, and a significantly reduced battery life are driving me away.
The IEM designer on 1964 Ears' website is way too much fun to play with, I think I've got a pretty cool design and artwork worked out for when I'm ready...