I personally like the look of the dual exhaust. And what it does for the bike is lower the center of gravity and makes the bike a little quieter vs a bike with one pipe.
I've seen a couple of you guys that say duals lower the center of gravity... unless they physically position them lower the center of gravity is the same since they are located where (on one side) a single pipe would be. Now the "Center of gravity" (side to side, not top to bottom) will be affected because there is equal weight on each side...