Two well-spec'd Sprint smartphones are in the house, but only one can be the dogfight champion.  Aaron pits the HTC EVO 3D against the Samsung Nexus S 4G.  The EVO 3D is the first US smartphone to offer 3D capabilities and packs a 1.2 GHz dual-core processor, 4.3-inch qHD display, dual 5-megapixel cameras with 720p HD video recording, front-facing shooter, 4G support, and Android 2.3 with HTC Sense 3.0.  The Nexus S 4G is powered by a single-core 1 GHz Hummingbird CPU, 4-inch Super AMOLED display, 5-megapixel camera, front-facing camera, 4G connectivity, and a stock build of Android 2.3.

Both are powerful Android devices that take advantage of Sprint's 4G network, but only one can come out as the champion.  Which one offers the best blend of features, usability, and performance?  We'll find out.  Part 1 of 2.