Engadget - Each year, several dozen smartphones land on our collective desks. They come in different shapes and sizes, boast different features and sell at different price points. We take each of them for a spin and review most of them, but only a handful really stand out. This is especially true with Android handsets, where incremental updates appear to be the modus operandi. Every now and then a device comes along that we really look forward to getting our hands on. Google's line of Nexus smartphones falls into this category, setting the new standard for Android each year.