I suggest you look up http://www.v-flyer.com/ for all you would ever want to know about Virgin. In particular, you can look up any aircraft configuration and get ratings and comments on the seating - in all classes. It is an extremely useful and helpful wesite.
Quoting Zrs70 (Reply 6): It depends on the route and on the direction. If you are going east coast-LHR at night and don't want to be disturbed, you should sit in the upper deck (dedicated snooze zone).
I thought the front nosecone section was the Quiet Zone unless they have changed it. If you plan in sleeping at all make sure you are a couple of rows in front of the bar if you happen to get in the second section. It isn't too bad but the lights and noise can disturb you some farther back.
"If you can't delight in the misery of others then you don't deserve to be a college football fan."