A bit of background. I bought a Raspberry Pi to use as a cheap, low power mini Linux server to control home automation, alarms, to put in a car with a GPS for both tracking and remote control and surveillance, tasks that the Raspberry Pi looks ideally suited for. A month or so after receiving my Pi, a friend recommended I check out the MK802 which on first glance looked like a TV top box, not really a competitor to the Raspberry Pi. I got one despite this and was pleasantly surprised by what it had to offer in the same kind of headless server Linux environment.
This series is my experience and personal opinions of the 2 devices especially when used in a headless server environment.
A lot of people took offence to me "slamming" the Raspberry Pi. I appreciate it's designed for education use and has the great community of enthusiasts and hardware hackers, this is why I bought one originally, however some people may find the MK802 more pleasant to use considering it is much smaller, provides significantly better performance at equivalent power consumption, can power a 2.5" external hard drive directly (the Pi needs a powered hub) and comes in a case with a power supply at a price point only a little bit higher than the Pi.