For a good quiet tire that'll mostly see highway miles, I would recommend Michelin's LTX series tires, namely the M/S treads. They have some LTX A/T tires, but those are moderately aggressive and may give you some road noise. The M/S tires have a deep tread pattern, but are smooth and quiet on on the road. If you haven't decided on the Dunlops yet, check out the Michelins. You can see the tires and how they look here:
http://jadcock.oldsgmail.com/nissan/index.html