Now i can tell you that i bought the herotab and he runs fine. I bought the same device from an other supplier, the third link of the post above, and that was a doa and send it back to the vendor. It was different from the one of merimobiles who have two srewes near the sd cart slot and the speacker. The other has not, but seems to have a better bild quality. My freescale i.mx515 mid runs very stable better than the wits a81e, but also about the wits, i am very satisfied. I have an apple ipad too who is very good but i prefer my android 2.2 devices who does have the same speed as the ipad or even better. At last i love the 4:3 8 inch screen of the herotab and the easy possibility to hold the wits a81e in one hand and its possibility of easy change the battery.