The challenge continues!  Aaron's on day 20 of the 30-day Samsung Galaxy S III Challenge, and so far, so good.  20 days in, battery life continues to be acceptable (though the international version does better in said department) and AT&T's 4G LTE connectivity is a nice feature to have, even if it means no quad-core Exynos CPU.  The international version is a bit more fluid, but the US variant is still zippy and packs goodies that make it worth considering over the global build.