to be honest, I'm not all that interested in JXD. i have read too many complaints about analog sticks breaking off the motherboard, and their LCD screens are crap.
one of my biggest concerns is that their 'build' of android is complete garbage. if they were more widely sold, like Samsung, or Asus, this wouldnt be a concern, because there would be an army of people making custom software.
i know theres a few 3rd party android builds for them, but if I'm buying something that isn't what I want "out of the box", then I'm leaning more towards a Vita.