BobLeHat

Hi all, this has been covered but not recently (that I can find) I have a 2011 superb with a Columbus head unit, I want to upgrade it to get android auto, my options are a sub£100 eBay model made by several unpronounceable brands or a more expensive ennon one (still low end I know) I can't spend much on the car at all. So seeing as I'm not spending over 200 either way, is there much difference between a 2gb cheap cheap one and a 4/6gb cheap one? I would eventually like to add forward and rear cameras and a dab radio, they all say they can do this. Thanks in advance