The all Vivid black is much faster I have the all black, and I was torn between that and the Silver and Black. I went all black to avoid being thought a Raiders fan
They both look great..just me though, I'd go with black...then powdercoat..and then powdercoat some more..rat it out!..would be an awesome look! If I had the money for a second bike I'd have one and that's what I would do.
I say all black as well. Mine was black before I painted it pnk and I have to admit.....black is a good looking color on a Sportster. Add some chrome and you are good to go.
All black, looks great, any Scoot or Cage looks better in black, buuuuuuuuut, it also don't stand out from the herd. Which ever Nightster color is the least popular is the one I would want.