Google Nexus 5
Among the first devices to come with Android 4.4 KitKat, the Google Nexus 5 is a thing of beauty. Its 5-inch full HD (1,920 x 1,080, 445 ppi) IPS Gorilla Glass 3 panel flows uninterrupted from top to bottom and is wrapped in a black or white plastic enclosure. It's built around a Qualcomm Snapdragon 800 quad-core Krait 400-based SoC running at 2.26GHz, which leads the industry. The sub-5-ounce marvel is also equipped with an Adreno 330 GPU at 450MHz, SlimPort for monitor sharing, 2 GB of RAM, wireless charging, dual-band Wi-Fi and NFC. Cameras are average at 8MP and 1.2MP. It's available in 16- or 32-GB models for Sprint or T-Mobile starting at $149 with a contract or $349 without.