Not sure it this is the right thread. Just want to share my experience for Onda Vi30.
I bought a Onda Vi30 Elite from Aliexpress. There was a promo for a price discount. I got mine for $161 including casing, 8G TF Card and screen protector (express shipping, about 7 days). All in all, I would say that it is a great tablet. But the 2M rear camera is not so good for taking closing in picture, or maybe I have not found an app to do that properly. I would share some pictures that I have took in the next post.

But there is limited choice when come to casing. Not many option for a 8" tablet. I got the casing with straps in 4 corners, not so elegant in looks... but it works to hold the tablet in place. Also there is no 'hole' for the rear camera...I'm still figuring out the best way to fix this problem.

I plan to use the tablet mainly for business presentation, task and calendar management. So far so good, would keep you guys posted in the future.