Love my Nexus "premium/red band" 8sp, been great over about 750mi so far. Not too noisy, but there are definitely gears where you hear a lot of whirring going on out back. Less noisy than a out of adustment derailleur system, more noisy that a single speed or a well adjusted derailleur system in optimal gears. Haven't been through any particularly nasty weather, though, so can't speak for resilience in hard conditions.

I'm using the Alfine rapidfire shifter and this setup feels a lot more precise and better than an older 7sp Nexus up with twist shifter I had in the past. Never tried any other IGH, so I can't compare it to others.