As an Android user I am always against the idea of getting low end Android devices with no support... because you are actually paying for the longevity of the phone when you buy med-high end Android phones as development for popular phones won't really stop.

My old Galaxy S is still receiving considerable amount of community support and it is running 4.2.1, the latest Jellybean. If you buy a low end Android phone, you probably won't even get JB.