When we built a two story addition on our first house in Santa Fe, N.M.
( background, above ) I tried to keep the overall look as low as possible
because there were only a few two story homes in our neighborhood
and I didn't want to stick out any more than I had to;
and the roof with the lowest visual profile is the hip
because there are no tall gable ends.
From that I found the hip to be a far superior roof system
as it gives the house more protection in high wind areas
and because there is an overhang all around it keeps the walls drier from the rain
and more shaded from the hot summer sun.