Been playing with some of these, connecting them to an Oculus Rift for a robotics project...
Mean bits of kit - the Pi 3 is a wonderful card - USD 35, includes WiFi, BT, 4 x USB, Ethernet, HDMI, 64-bit, quad code 1.2GHz ARM 8 etc. etc. still only the size of a credit card and the same price as the Pi 2B+ though much more feature rich & a lot faster.Only downside (slight) is 1Gb RAM - more than enough for Linux.
Getting to really like it...
Nick