I think the vapor and flavor are the same to me. I prefer the stardust for a few reasons.
-Easy to fill
-Lasts quite a while (I've had mine for over 2 weeks)
-Durable
-Nice mouthpiece included.
-Looks nice
-Less filler material
What I don't like is...
-The measurements on the side (at least on mine) are totally off and take away from the aesthetic (kind of looks like a syringe)
-Might be hard to clean because it's a little difficult to take apart (I have not tried yet, but will)
-Doesn't hold too much liquid (but it's easy to fill)
-Liquid might leak if the
tank is tipped upside down(very small amount).