I have Zenithink ZT280 C71, was USD $80. I would not recommend it. Battery life is crap, wifi antenna is awful, making it impossible to use. It overheats and touchsceen sensor goes crazy. It came with Android 4.0 and that was bad... slow and lots of app incompatibility (no Flash, no Netflix, Popcap games don't work, etc.). Downgraded to 2.3 community ROM and it's much better, but still not very useful because of the lack of wifi if you are more than 3 meters from the wireless access point (and I'm not kidding about that distance).