I know this is super old but I just have to say how much I love these SM3 V2. I can't think of an IEM under $600 that's better, the W4 can be called equal by some but not better imo.
Now the have the new SM64 with traits of they're custom EM4 and EM6 along with and impedance adapter like on the TDK BA200. Its also a 3 driver 3 way crossover but I'm guessing it will be more resolving and more transparent as well so I'm looking forward to getting a pair in the next few months.
I'm defiantly hook on the Earsonics sound and if the build quality was a little better they'd be the top top-tier under $600 imo.