I've been on deck 2 of the Wonder, with cabins below us. I also really liked the location and have booked deck 2 of the Dream for 2011. However, that ship has no cabins on deck 1, so I'm not sure I'm going to like it as much. It looks like one of the restaurants is on deck 2, though. Which ship are you on?
For me, I don't want to spend the extra money to be up higher. You have to be careful with all types of cabins and check what is above and below you.