Pros: SQ, 3D imaging, cohesive soundstage, isolation
Cons: fit could be bad for people with small ears
I'm not going to go into a long review on here (thats for my blog) but I have to say the SM3 V2 (which is the same thing but with a better housing and removable cable) is easily one of the best universals you can get. From the punch bass, crisp yet never harsh highs, those wonderful forward detailed mids to the above average soundstage and the amazing 3D imaging there's nothing I can find wrong about how they sound. I love the warm smooth mids that have as much detail in them as an IEM I've heard, even as much as the very resolving Heir 3.Ai. The one thing that may be a problem for some would be the new housing on the V2 because it is quite large and it just fits on the inside of my ears which aren't small but other than that the new build on them is great. The removable cable is a big plus and is the same as the UE and Westone cables so after market cable will be no problem at all.
All in all these are a fantastic IEM and I'd recommend them to anyone wanting a warm detailed IEM with great imaging.