Nexus 6P = $500 (32 GB) = 5.7", aluminum body/frame, Huawei-built, QHD, camera focused on low light, 3450 mAh battery, Snapdragon 810 (current top-end), USB Type C w/quick charging, 64 GB for $550, 128 GB for $650
Nexus 5X = $379 (16 GB) = 5.2", built by LG, 1080p, camera focused on low light, 2700 mAh battery, Snapdragon 808 (current but not top-end), USB Type C w/quick charging, 32 GB for $429