Received my pair of VC1000 this afternoon so time for some initial thoughts.
Previous IEM: S4, X10, R-50, M6, and now VC1000
They are very well rounded IEMs, they sound very nice to a large range of genres (including my favorite EDM). While not bass heavy by any stretch, there is enough to be at my liking. They soundstage is not the largest I've heard, but definitely not the smallest. Sibilance is not an issue. Pretty quick response but definitely slower than the R-50. Could listen to them forever without fatigue.
Compared to R-50: Technically less superior sounding (remember, these are a fun sig) but not terribly far behind. Package and accessories are a huge plus over R-50. About twice the amount of bass, but still very tight a quick. I think as a whole package the VC1000 are better. I think they are MUCH more durable, better for the average user, and SUPER comfortable. Color is really a bit strange of the pieces though. Definitely a keeper.
EDIT: I'd like to add that cord noise is quite a lot with cords straight down if moving, but over the ear seems to work quite well and completely eliminates cord noise.
Edited by cloudycloud - 5/6/13 at 6:59pm