I generally agree, but I'd like to add that, when I moved to Las Vegas this summer, and it was routinely 110+F with 15% humidity and 2,200 feet ASL, I temporarily switched to 106's at the advice of some of the long-time local guys, and it made a noticeable improvement in tail authority. I could have gotten by with 96's, but the 106's felt better in those conditions. Now that the weather has turned, and it's much cooler outside, I'm back to the 96's, and they're working great. So, my advice is, generally go with 96's unless conditions (e.g., high altitude and/or temperatures) warrant a change, and then consider 106's.
