I would go with the Nomad Solid and adjust the surface if need be. The Mutant Cell Pearl is REALLY strong and likes to change direction really quickly. It's not a flippy change, but quick nonetheless. Keep the pin low on the Nomad to smoothen it out even more.
Now keep in mind, the Nomads are sneaky strong so even in box surface, it may not be too much weaker than the c3.5 or Mutant Cell, especially if there is any friction downlane. So if the Fast, Reign and VE were too strong, then you probably want the Riot.