Not sure about Nolan, or Arai.
I have three helmets:
Schuberth: Love the sun visor, hate the noise and the fact that fitting headsets is a PITA, and the aerodynamics result is significant head wobbling. In my book, the most expensice let down in recent motorcycling.
HJC Flip: Worried about plastic flip securing pins. How easy would the break letting the flip front swing open? Comfortable, quiet and easy for comm systems. Safe???
Scorpion Exo700: Quietest, comfortable, this is my primary helment.
I got clip on sunglasses built specifically for my glasses. Some clip on are magnetic making them even easier!