The soundstage is good. I can only wonder how good is the soundstage on Havi B3 Pro1 because people say they're better than the VSD3S.
After about 24 hours of usage/burn in (I only use them, don't leave them to burn), they sound really good to me. Even better than my Goldring DR150 with a custom cable. The DR150 sounds thin and bright compared to the VSD3S which is a lot more full bodied and lush. It sounds musical and fun, maybe not accurate and flat. And I noticed that it really scales well with amplification. The highs now no longer sound harsh and distorted, especially in complex passages. It doesn't handle it like a champ, here is where the DR150 wins, but the rest of the spectrum, VSD3S wins hands down.
The fit is also good, it fits snugly in m ear and is unobtrusive. I find the cable to be very good quality, some stiffness to it and thick. One gripe is it doesn't 'hug' my ears over it so sometimes it comes off from behind my ears to the side and I have to put it back. One solution is using the ear guide but the shape doesn't fit my ear well.
One thing though VSonic, please make L jacks. L jacks are better than straight jacks. Nobody wants a jack sticking out from the side of their DAP/Phones.