Simplicity ease of use mag. I used a 250 for plex 2014. After the demise of cardshare. I am positive I still have it somewhere.
254/256/322. A couple of formuler boxs,Minix neo latest being z8. Took 10 mins from out the box to Connection. A lot more user friendly, but for asking price and black friday approaching, you may want to consider a shield..
And finally your provider is the key, regardless off what box you decide upon.. I would settle for a mag 250 with a decent provider, rather than a nvidea shield with a poor service..